EXHIBIT 99

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UNITED STATES

SECURITIES AND
EXCHANGE COMMISSION

Washington, D. C. 20549



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FORM 11-K



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(Mark One)

|x | ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ------------------------------------------------------------------------------

For the fiscal year ended December 31, 2005

OR



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------

For the transition period from  to

Commission file number 1-12147



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THRIFT PLAN OF DELTIC TIMBER
CORPORATION

(Full title of the Plan)

DELTIC TIMBER CORPORATION

(Exact name of issuer of securities held pursuant to Plan)



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|                                                         |  |           
|-------------------------------------------------------- |  | ----------
|210 East Elm Street, P. O. Box 7200, El Dorado, Arkansas |  | 71731-7200
|(Address of principal executive offices)                 |  | (Zip Code)



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THRIFT PLAN OF DELTIC TIMBER CORPORATION

Table of Contents



|                                                                                                   |  |     
|-------------------------------------------------------------------------------------------------- |  | ----
|                                                                                                   |  | Page
|Report of Independent Registered Public Accounting Firm                                            |  | 2   
|                                                                                                   | 
|Statements of Net Assets Available for Plan Benefits as ofDecember 31, 2005 and 2004               |  | 3   
|                                                                                                   | 
|Statement of Changes in Net Assets Available for Plan Benefits for theYear ended December 31, 2005 |  | 4   
|                                                                                                   | 
|Notes to Financial Statements                                                                      |  | 5   
|                                                                                                   | 
|Schedule H, Line 4I  Schedule of Assets (Held at End of Year) as ofDecember 31, 2005              |  | 10  
|                                                                                                   | 
|Consent of Independent Registered Public Accounting Firm                                           |  | 12  

Schedules not listed above are omitted because of the absence of conditions under which they are required under
the Department of Labors Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974.



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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors

Deltic Timber Corporation:

We have audited the accompanying statements of net assets available for benefits of the Thrift
Plan of Deltic Timber Corporation as of December 31, 2005 and 2004, and the related statement of changes in net assets available for benefits for the year ended December 31, 2005. These financial statements are the responsibility of the
Plans management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in
accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as
well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion,
the financial statements referred to above present fairly, in all material respects, the net assets available for benefits of the Thrift Plan of Deltic Timber Corporation as of December 31, 2005 and 2004, and the changes in net assets available
for benefits for the year ended December 31, 2005 in conformity with U.S. generally accepted accounting principles.

Our audits were performed for the
purpose of forming an opinion on the basic financial statements taken as a whole. The supplemental Schedule H, Line 4i  Schedule of Assets (Held at End of Year) as of December 31, 2005, is presented for the purpose of additional analysis
and is not a required part of the basic financial statements but is supplementary information required by the Department of Labors Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974.
This supplemental schedule is the responsibility of the Thrift Plan management. The supplemental schedule has been subjected to the auditing procedures applied in the audits of the basic financial statements and, in our opinion, is fairly stated in
all material respects in relation to the basic financial statements taken as a whole.

/s/ KPMG LLP

KPMG LLP

Shreveport, Louisiana

June 26, 2006



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THRIFT PLAN OF DELTIC TIMBER CORPORATION

Statements of Net Assets Available for Benefits

December 31, 2005 and 2004



|                                  |  |      |            |      |           
|--------------------------------- |  | ---- | ---------- | ---- | ----------
|                                  |  | 2005 |            | 2004
|Assets                            |  |      |            |      |           
|Investments (Note 3)              |  | $    | 15,754,098 |      | 14,168,687
|Liabilities                       |  |      |            |      |           
|Forfeitures due to Company        |  |      | 43         |      | 17,052    
|                                  |  |      |            |      |           
|Net assets available for benefits |  | $    | 15,754,055 |      | 14,151,635
|                                  |  |      |            |      |           

See accompanying notes to financial statements.



3



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THRIFT PLAN OF DELTIC TIMBER CORPORATION

Statement of Changes in Net Assets Available for Benefits

Year Ended December 31,
2005



|                                                  |  |   |           
|------------------------------------------------- |  | - | ----------
|Additions to net assets                           |  |   |           
|Contributions                                     |  |   |           
|Employee                                          |  | $ | 1,096,021 
|Employer                                          |  |   | 607,075   
|Other                                             |  |   | 147,062   
|                                                  |  |   |           
|Total contributions                               |  |   | 1,850,158 
|                                                  |  |   |           
|Investment income                                 |  |   |           
|Interest and dividends                            |  |   | 398,500   
|Net appreciation in fair value of investments     |  |   | 1,099,608 
|                                                  |  |   |           
|Total investment income                           |  |   | 1,498,108 
|                                                  |  |   |           
|Total additions to net assets                     |  |   | 3,348,266 
|                                                  |  |   |           
|Deductions from net assets                        |  |   |           
|Distributions of benefits                         |  |   | 1,742,810 
|Administrative expenses                           |  |   | 3,036     
|                                                  |  |   |           
|Total deductions from net assets                  |  |   | 1,745,846 
|                                                  |  |   |           
|Net increase in net assets available for benefits |  |   | 1,602,420 
|Net assets available for benefits                 |  |   |           
|Beginning of year                                 |  |   | 14,151,635
|                                                  |  |   |           
|End of year                                       |  | $ | 15,754,055
|                                                  |  |   |           

See accompanying notes to financial statements.



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THRIFT PLAN OF DELTIC TIMBER CORPORATION

Notes to Financial Statements

December 31, 2005

Note 1 - Description of Plan

General

The Thrift Plan of Deltic Timber Corporation (the Plan) is a profit sharing, defined contribution plan covering each employee
who is scheduled to work, or actually does work, 1,000 or more hours per year. The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974 (ERISA). Although it has not expressed any intent to do so,
Deltic Timber Corporation (Deltic or the Company) has the right under the Plan to amend or terminate the Plan subject to the provisions of ERISA. For a more complete description of the Plans provisions, refer to the
Plan document.

The Plan is administered by Deltics Pension, Investment, and Employee Benefits Committee (Plan
Administrator), whose members are appointed by the Companys Board of Directors. SunTrust Bank (SunTrust or the Trustee), Nashville N.A. is the Plans trustee.

Contributions

2005:

Contributions to the Plan include (a) employee tax-deferred salary reduction contribution, (b) employee after-tax supplemental contribution,
(c) Employer matching safe harbor contribution and (d) rollovers from other qualified plans.

A participant may elect to
contribute up to 50 percent of their eligible compensation to a tax-deferred account. Effective January 1, 2005, the Employer will make a safe harbor contribution on behalf of each participant who makes a tax-deferred contribution to the Plan.
The safe harbor contribution will equal 100 percent of the first 5 percent of eligible compensation that is contributed to the Plan. The employer may make additional voluntary matching contributions at its discretion. No such additional
contributions were made in 2005. Tax-deferred contributions may not exceed the annual IRS limit. Participants may also contribute to an after-tax supplemental account not to exceed 10 percent of eligible compensation. After-tax supplemental
contributions are not matched by the Employer. Participants direct the investment of their contributions and Employer matching contributions into various investment options offered by the plan. The Plan currently offers stock in the Company and 11
investment funds as options for participants.

2004:

Contributions to the Plan include (a) employee tax-deferred, earnings-reduction contributions, (b) employee after-tax contributions (after-tax contributions were disallowed on January 1, 2003, for new
employees, and March 1, 2003, for current employees), (c) Company matching contributions, (d) employee after-tax supplemental contributions, and (e) rollovers by participants from other qualified plans.



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THRIFT PLAN OF DELTIC TIMBER CORPORATION

Notes to Financial Statements

December 31, 2005

Note 1 - Description of Plan (cont.)

Contributions (cont.)

Each year, a participant may contribute, on a combined tax-deferred and/or after-tax basis up to 50
percent of their annual base earnings. The Company voluntarily agreed to make annual contributions to the Plan based on each participants contributions and years of participation. The Company matched 50 percent of employee contributions for
the first five years of participation, 75 percent of employee contributions for the second five years of participation, and 100 percent of employee contributions thereafter. However, Company contributions could not exceed five percent of an
employees annual base pay. Employees after-tax supplemental contributions, which were not matched by the Company, could not exceed 10 percent of their annual base salary. The Company applied any amounts contributed by the Company that
were forfeited by participants in accordance with provisions of the Plan to reduce subsequent contributions. Participants direct the investment of their contributions and company contributions into various investment options offered by the Plan.

Throughout various Plan mergers and restatements, the Company has allowed account balances from a former deductible account to remain in
the Plan. However, after December 31, 1986, participants were not allowed to contribute to this account.

Vesting

Effective January 1, 2005, the Plan was amended whereby participants working for the employer on that date, became 100 percent vested in all
previous matching employer contributions. Subsequently, participants will be immediately 100 percent vested in safe harbor contributions.

Prior to January 1, 2005, a participant was vested in Company contributions after (1) completion of three years of service, (2) retirement on or after age 65, (3) death, (4) total and permanent disability, or
(5) discontinuance of the Plan.

Withdrawals

Although the Plan is designed specifically for retirement, a participant may request an in-service withdrawal from the Plan while actively employed. A participant may withdraw employee after-tax supplemental
contributions, Pre-2005 Employer matching contributions, Pre-1987 deductible contributions, or Post 1986 matching employee contributions at a minimum of $250. Withdrawals from these accounts are limited to once every 12 months. Pre-1987 matching
employee contributions may be withdrawn at any time and at any amount. Participants may be required to bear the cost of any distribution fees associated with an in-service withdrawal.

A participant may withdraw employee tax-deferred contributions or rollovers from other qualified plans under IRS hardship provisions only.
Hardship is an immediate and heavy financial need in one of the following areas: (1) medical expenses not covered by insurance for employee, spouse or dependent, (2) purchase of a principal residence (not including mortgage
payments), (3) preventing eviction or foreclosure from employees principal residence, (4) tuition for the next 12



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THRIFT PLAN OF DELTIC TIMBER CORPORATION

Notes to Financial Statements

December 31, 2005

Note 1 - Description of Plan (cont.)

Withdrawals
(cont.)

months of post-secondary education for employee, spouse or dependent, (5) funeral or burial expenses for the
employees deceased parent, spouse or dependent, (6) principal residence repair that qualifies for the casualty deduction, or (7) other events as may be determined by the IRS. If a hardship withdrawal is taken, participation in all
accounts is suspended for 6 months.

Any Employer contributions, employee tax-deferred contributions or account earnings withdrawn from the
Plan may be subject to a 10 percent penalty tax under the Tax Reform Act of 1986 if the participant is not 591/2years old, permanently disabled or has died.

Upon retirement, disability or death of a participant, the participant or his/her
spouse, if the designated beneficiary, has the option to receive settlement in a lump sum or installment payments not to exceed 20 years or actuarial life if less than 20 years.

Administrative Expenses

Most
administrative expenses are paid by the Company.

Note 2 - Summary of Significant Accounting Policies

Basis of Accounting

The accompanying
financial statements of the Plan have been prepared on the accrual basis of accounting and present the net assets available for benefits and changes in those net assets.

The investments and changes in the net assets available for benefits have been determined by the Trustee and reported to the Plan Administrator based on quoted market values. Purchases and sales of securities are
recorded on a trade-date basis.

The financial statements of the Plan are compiled using information received from SunTrust. The information
includes listings of investments and cash receipts and disbursements of the Plan, together with all other transactions, which affect Plan investments. Such information has been certified as complete and accurate by the Trustee. The Trustee has been
granted discretionary authority concerning the purchase and sale of investments in the trust fund.

Use of Estimates

The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of net assets available for benefits and changes therein. Actual results could differ from those estimates.



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THRIFT PLAN OF DELTIC TIMBER CORPORATION

Notes to Financial Statements

December 31, 2005

Note 3 - Investments

During 2005, the Plans
investments, including gains and losses on investments bought and sold, as well as held during the year, appreciated in value by $1,099,608, as follows:



|                  |  |   |           
|----------------- |  | - | ----------
|Mutual funds      |  | $ | 50,868    
|Equity securities |  |   | 1,048,740 
|                  |  |   |           
|                  |  |   | $1,099,608
|                  |  |   |           

The following table represents the fair value of individual investments that exceeded 5% of the
Plans net assets at December 31, 2005 and 2004:



|                                         |  |      |            |      |           
|---------------------------------------- |  | ---- | ---------- | ---- | ----------
|                                         |  | 2005 |            | 2004
|Mutual funds                             |  |      |            |      |           
|MFS Massachusetts Investors Growth Fund  |  | $    | 1,143,631  |      | 1,171,895 
|STI Classic Capital Appreciation Fund    |  |      | 1,284,543  |      | 1,605,045 
|STI Classic Small Cap Growth Stock Fund  |  |      | 1,087,215  |      | 802,204   
|Fidelity Advisor Equity Income Fund      |  |      | 1,179,708  |      | 982,362   
|Vanguard 500 Index Fund                  |  |      | 1,093,393  |      | 944,275   
|MFS Total Return Fund                    |  |      | 1,206,465  |      | 968,549   
|SunTrust Stable Asset Fund               |  |      | 2,365,434  |      | 2,735,211 
|Goldman Sachs Core Fixed Income Fund (a) |  |      | 712,430    |      | 799,932   
|Other (b)                                |  |      | 1,027,820  |      | 318,129   
|                                         |  |      |            |      |           
|                                         |  |      | 11,100,639 |      | 10,327,602
|                                         |  |      |            |      |           
|Equity securities                        |  |      |            |      |           
|Deltic Timber Corporation common stock   |  |      | 2,659,239  |      | 2,217,731 
|Murphy Oil Corporation common stock      |  |      | 1,994,220  |      | 1,623,354 
|                                         |  |      |            |      |           
|                                         |  |      | 4,653,459  |      | 3,841,085 
|                                         |  |      |            |      |           
|Total investments                        |  | $    | 15,754,098 |      | 14,168,687
|                                         |  |      |            |      |           

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|(a) | less than 5% in 2005 but greater than 5% in 2004
|--- | ------------------------------------------------

|(b) | individually less than 5% in both years
|--- | ---------------------------------------

Note 4 - Income Tax Status

The Plan meets the necessary requirements of the Tax Reform Act of 1986 as documented in Section 401(a) of the Internal Revenue
Code, and accordingly, the related Trust is exempt from taxation under the provisions of Section 501(a) of the Internal Revenue Code. The Internal Revenue Service determined and informed the Company by a letter dated January 28, 2002, that
the Plan was designed in accordance with applicable sections of the Internal Revenue Code. By a letter dated February 24, 2004, the Internal Revenue Service made a favorable determination related to plan amendments enacted in 2003. No
additional determination letters have been received since that time related to the subsequent plan amendments; however, the Plan Administrator believes that the Plan is designed and is currently being operated in compliance with the applicable
requirements of the Internal Revenue Code. Until such time as cash or shares are withdrawn from the Plan by a participant or a participants beneficiary, no income tax is payable by the participant/beneficiary on: contributions made by the
Company on the participants behalf,



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THRIFT PLAN OF DELTIC TIMBER CORPORATION

Notes to Financial Statements

December 31, 2005

Note 4 - Income Tax Status (cont.)

allotments made
by the participant pursuant to the Economic Recovery Tax Act of 1981, or any amounts added to the participants accounts representing his/her proportional share of the investment income of the Trust.

Note 5 - Related Party Transactions

Certain Plan
investments are invested in funds sponsored by affiliates of SunTrust. These investments included STI Classic Capital Appreciation Fund, STI Classic Small Cap Growth Stock Fund, and SunTrust Stable Asset Fund. SunTrust is the Trustee of the Plan;
therefore, these transactions qualify as party-in-interest transactions. The Company is the sponsor of the Plan, and is considered a party-in-interest.

Note 6  Concentration of Investments

As of December 31, 2005 and 2004, 17% and 16%, respectively, of net assets
available for benefits were invested in Deltic Timber Corporation common stock. In addition, 30% and 36%, respectively, of net assets available for benefits were invested in mutual funds sponsored by SunTrust Bank.



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THRIFT PLAN OF DELTIC TIMBER CORPORATION

Schedule H, Line 4i

Schedule of Assets (Held at End of Year) (2)

December 31, 2005



|                                            |  |                          |        |  |               |           
|------------------------------------------- |  | ------------------------ | ------ |  | ------------- | ----------
|Identity of Issuer                          |  | Description ofInvestment |        |  | Current Value
|Equity securities                           |  |                          |        |  |               |           
|Deltic Timber Corporation common stock (1)  |  | 51,296.518               | shares |  | $             | 2,659,239 
|Murphy Oil Corporation common stock         |  | 36,936.848               | shares |  |               | 1,994,220 
|Mutual funds                                |  |                          |        |  |               |           
|Fidelity Advisor Equity Income Fund         |  | 41,626.952               | shares |  |               | 1,179,708 
|MFS Massachusetts Investors Growth Fund     |  | 89,067.820               | shares |  |               | 1,143,631 
|Templeton Foreign Fund                      |  | 32,412.512               | shares |  |               | 410,990   
|Federated Mid Cap Index Fund                |  | 10,124.463               | shares |  |               | 224,358   
|STI Classic Capital Appreciation Fund (1)   |  | 104,434.378              | shares |  |               | 1,284,543 
|STI Classic Small Cap Growth Stock Fund (1) |  | 51,846.201               | shares |  |               | 1,087,215 
|Vanguard 500 Index Fund                     |  | 9,514.387                | shares |  |               | 1,093,393 
|SunTrust Stable Asset Fund (1)              |  | 64,283.078               | shares |  |               | 2,365,434 
|Goldman Sachs Core Fixed Income Fund        |  | 72,254.554               | shares |  |               | 712,430   
|Dreyfus Premier Small Cap Value             |  | 18,288.539               | shares |  |               | 392,472   
|MFS Total Return Fund                       |  | 78,494.772               | shares |  |               | 1,206,465 
|                                            |  |                          |        |  |               |           
|                                            |  | 660,581.022              | shares |  | $             | 15,754,098
|                                            |  |                          |        |  |               |           

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Notes



|(1) | SunTrust manages various investment funds and, accordingly, is a party-in-interest. Additionally, Deltic Timber Corporation, as sponsor of the Plan, is considered a
party-in-interest.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Information on cost of the investments is excluded as all investments are participant directed.
|--- | -----------------------------------------------------------------------------------------------

|(3) | The above data is based on information that has been certified as complete and accurate by the Trustee.
|--- | -------------------------------------------------------------------------------------------------------



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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Pension, Investment, and Employee Benefits Committee has duly caused this Annual Report to be signed on its behalf by the undersigned hereunto duly authorized.



|                     |  |                       |  |                                      
|-------------------- |  | --------------------- |  | -------------------------------------
|                     |  | THRIFT PLAN OF DELTIC
|                     |  | TIMBER CORPORATION   
|                     |  |                      
|Dated: June 27, 2006 |  | By:                   |  | /s/ Clefton D. Vaughan               
|                     |  |                       |  | Clefton D. Vaughan, Vice President   
|                     |  |                       |  | of Finance and Administration and    
|                     |  |                       |  | Vice Chairman of Pension, Investment,
|                     |  |                       |  | and Employee Benefits Committee,     
|                     |  |                       |  | Deltic Timber Corporation            



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CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors

Deltic Timber Corporation:

We consent to incorporation by reference in the Registration Statements (No. 333-34317,
No. 333-76294, and No. 333-90026) on Form S-8 of Deltic Timber Corporation of our report dated June 26, 2006, relating to the statements of net assets available for benefits of the Thrift Plan of Deltic Timber Corporation as of
December 31, 2005 and 2004, and the related statement of changes in net assets available for benefits for the year ended December 31, 2005, and related financial statement schedule as of December 31, 2005, which report appears in the
December 31, 2005 annual report on Form 11-K of the Thrift Plan of Deltic Timber Corporation.

/s/ KPMG LLP

KPMG LLP

Shreveport, Louisiana

June 26, 2006



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