Read more about selective housing sites in Chapter 2 of both the Instructions to Depository Libraries and the Federal Depository Library Manual. Selections Changes to a library's item selection profile are done as a Web transaction. Depositories may add item numbers to their selection profile once a year, usually during June and July. These selections are effective with the new fiscal year on October 1. Items may be dropped from the profile at any time during the year and will take effect within 72 hours.
Microfiche drops take effect at the beginning of the week after the transaction.
There are more detailed instructions for amending selections. GPO Deposit Account Libraries that have a continuing need to purchase Government products through a GPO Bookstore may wish to establish a deposit account. Deposit accounts can be used to replace lost materials, to purchase second copies of heavily used items, or to purchase items not included in the library's selection profile. Substituting Depository Materials Chapter 4 of the Instructions to Depository Libraries covers substituting for depository materials. As agencies turn more to the Web to publish, this format is sometimes preferred by librarians.