. · 

• REF ID:A.70085 

Mr. H. P. :Edmundson ' . · 

Department ot Mathematics 

University of Calilornia 

.Los Angeles, California 

Dear JI?'... Edmurdson; 

., 

. . . . . 

• 

.·. 

'?hank you veey mu.ch .£or.your note of 19 Mq 19.S2 and tor 

sending me the quarterly report on· Projec.ts am Publications 

of :NBS. . . . . . . ' . . . . .· -· .. . 

· We get those reports regular~ from N3S but I have· not'. 

seen 8Jl7 of them until you sent me this one, which I find 

i.ilteresting. · 

. I was glad to: learn about the Conference on Mechanical. 

Transiati.on to be held at MIT from lB to 20 June, am. we are . planning to hav:e an observer attem.. Thank you also for that. 

bit of use£u1 in.form. ti.on. 

With best regards, I am, 

.. , 

~ ... ·. ' 

I o• ~ ' • 

. ·-

.. 

.. 

WILLIAM F. FRIEDMAI 

Consul.tant 

@'pp roved for Release by NSA on 03-24-2014 purs~ant t~· E .0 .· 135l' : .. ·-:· .. · 
DEPARTMENT OF MATHEMATICS 

LOS ANGELES, CALIFORNIA 

!nvERSITY OF CALIFORNIA • 

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FROM llAllE CIR nT1.E 

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• .;&.... ~' •• 

ID:A70085 • 

NBS PROJECT NBS REPORT 

11'61 

Projects and Publications 

of the 

NATIONAL APPLIED MATHEMATICS LABORATORIES 

October through December J 951 

• 

'11lia report ia hauecl for infonatian parpuea only. Pablicatie, reprinting, or reproductia11 

in 11ny fol'll, either in whole or in p•rt, i• prohibited anle•• permiaaion in writing ia obtained 

fr• the Office of the Director, N•ti••l Bareau of Standarda, l••hin1tcm 25, D. C. 
• REF ID:A700. 

NATJOJl,i\L APPL! F.n ,, ITH~:MATlrS I ~BORATORJ ES Octnlic1 l th.r11..:.~h Uecembel" 'H 1 1951 

~D~I'llSTRATIVE OFrICE 

John H. Curni;s, Ph. I\, Cl1Jef 

Edward 'A'. Camion, Ph.D , A•.ustant Cluef 

OJp 1aussk'\r-1'nad, Ph.D., llM!ier..atl.c• Cunaultant W' J, Y'1Uden, Ph.D , llllrliP.-wtJCll Consult•nt 

1,1yrclt" R. N-l11111rton 1 MA., T11c11n1ral A.1d 

lu1M 0. Ruelr1guez, M.A., Cuef Cli?rk 

John B. TalJrJ u.o, A.C.S., Aasut.1t11t C.'uef Clerli 

Mlsrf".ll'el "'· Dawan11 1 r.t A., S('Cl'Pt•r)' 

Elsi,. L. Husrr.an, S..:ret11ry fC.,,,h t. J 

}11cqUf!'l !he B. Jann, Secrf'tory 

Violet c. Jordan, Mcretarv Bs~llPr L. Tur,.., r, ~rret.ar) 

INSTITUTE FOR NUMERICAL ANALYSIS Los Angeles, Cal1:£orn.ia 

Derr1c..k H. ~hller, Ph.D •••••••••••• , ••• , ••••••••••• , ••• Director of Research \1agnus a. Hestenes, Ph.D •••••••• Assutant lhl'f'ctor and l'CLA lialROh Offu; .... r Herry D. lluskev, Ph.D .......... AsalStent Director f'o1 Mathcn".at1cel ~1,,lrt"R 

Gertrude Blanch, Ph.D ••••••• ,Asautant to the D:lre-cLor (Jtiurmr1cal AnaJ)0s1s) 

Albert S. C.a.hn, Jr. 1 \1,S •••• , • , •• AsslSLDRt to the Director CAdn1nu1truLlunl Rneorcl1 Stall 

Fnrman S. Actun, D.Sc •..• , •••••..••••. ,, ••.•..•••••••• , ..•.••• AlatJ1el!111tLC1un Olar lea L. Afr.ics, Jr. 1 B.A •••.•••. , •••••••••• ,, .•• I CLA Beaearch AaaurLote Leonard M. Blumentha I, Ph.D •• _ •••.•• _ •• _ •••••..•••••••••••.••• r.Lithonauc1-n 

B. V1v1an &.-den, Ph.D •••• , ••••• ,, ••••••••••• ,., •••• , .C.onsultunt lF..ng1neerl 

(;eorge- I!. l-ar11ythe, Pl1.D.,, •••••• ~- •• , •••••••••••• ,., ••••••••• !ttathe"1atlt:1on 

Jerry"· Gaddum, At.A ••• ,, ••••••••••••• ,, •••••••••••••••• , ••••• ;\tatht-rnat1r.ian 

Tam ~llburr, Ph.D .............. ·---······--··-········C:O..•ultant !Engineer) C.ornelilVI L.o.nrzos, Ph.ll •..••••••••• ,,., •••••• ,, ••. ,, ••••••• , •• Mathenat1t.ia11 

H1chard H. Lanon, At.A ••••• , ••••••••••• , ••••••••••• L<"..LA. Research As:11nc1at"' 

1beodore S. 1.lotzhn, Pl1.D ••• , ••••••••••• , ••• , •••••• LCLi\ Research Assoua.tc 

Victor A. Oaiwohl 1 Jr., Ph.D ••••••••••••• ,, •••••••••••• Coneultont llinquistl 

to.ell J. P••8"• Ph.D.·---··········-········-·--·-···········Mathe ... LlL1an David S. Saxon, Ph.D., ••••••••••••• , •••• ,,, •• ,, ••••• , •••• , •••••••• Phy1111c1st 

lsaa<" J. Schoenher1, Ph.D ........ , ........ , ... ,, ... l Cl.A Research AssC"Cl11te! 

F.duard O. Stiefel, Ph-D •.••• -•• -••..••• _ •• -••••..•• UCLA Research Asscx.utc Pt.tar,·in l .. 'Stein, Ph.D •• ,, ••••••• ,., ••••••••••••••••••••• ,., ••• Mathemo.t1c1an 

V.ulfgang R. 'Aasow, Ph.D •••••••••••• , ••••••••• , •••••••••••• , ••• !dathemat.ician \1aunce \'. W1 lkes, Ph.D. , • , ••••••••• , , , •••••• , ••• C.O..sult.ant H&themat1cion) Graduah F~l lCllrll 

Stephen G. Gas1orn•ncz 1 M.A. CUCLA) Robert M. Ha)es, \t.A. Ura De Hochstraasrr, M.A. ( lCl.A l Mat.h~n•l.&Clll Service• Urut. 

Arnold D. Hestenes, 14l.D ••••••• , , . , ••••••• , , , . , • , •••••••••...• t.1at.l.nnt.ician foreder1ck H. Hollander, Ph.D ••••• , ••••••••••••• ,., •••••••••• , ,ft,tat.heMD.tir111n Alarv.111 HOlllB.rd, M'.S •••••••••••••••• ,, ••••••••• ,, ••••• , •••• ,., •• Vathemal1C'1a11 

Rnselyn S. Lipk1s 1 B.A •••••.••••••••.• , •••••••• , •.• ,,, •••••••. a.tatneraat1c111n 

Robert H. f\eynolds 1 M.S •• , ..••••••• , , .••••••••• , , ••• , , , •••• , .• Mathe•tician 

'Jhomo.a fl, Soutl10.rd, Ph.D ••••••••••••••••• ,, •••••••• ,,, .. ,, •. , .ftia.thematlc"Jan 

Jo.verctt C. \'owe I 11 Ph.D •••• ,, ••• ,., •••• , ••••••••• ,,,, ••••••••• Mathr.•t1cian 

Cua;put..1n1 St.all 

Leonus T. llatiste, B.S. R:CLAl Patric1.i B. Bremer, B.A. LeoJa CutJer, B.A. 

F.dward D. F1aher 1 B.S. Alexandra I, Forsythe, M.A. 

L1llun fbrthal, B.A. Gllldys P. Frankhn, B.S. Fmia M. Henderson, M.A. Ruth B. HurRa11, B.A. \1erry M. Kruse, B.S. 

Th011Ba D. Lak'ln 

:\ar11111 1_.1, B.S. Shirley L. Marlui, M.A. 0.-en H. \Ioele' 1 B.A. Elmer E. Oshorne, M •• ~. 

Jolm A- Pootle), B.A. Non N. Reynol118, lt.S. 

l.aVerne E. lbckard, M.A. Albert 11- Rosenthal, B. A. 

.fJerome A. Schneck, B-A· M. Winifred Sou. th 

l.onse M. Straus, M.A. 

Lindley s_ lhlaon, M_A. llllcli.1ne .DeveJopaent •nd •Jectron.ac Z...barotory St•ll 

Rapar Thorensen, Ph.D •••••••••••••• , ••••••••••. , •••••• Electronic Sc1ent1st 

81agio F. Aa:hrua10, B.S ••••• , ••••••••••••••••••••••••••• Electronic Engineer 

Edward l.acey, M.::li •••••••••••••••••••••••••••••••••••• , •• Electronic Eng1n"e" 

BlanrJ,. C. t.idem Kenneth J_ llllbkin (lCLAl John I'. t"ra1•ci•, B.S. <UCLA) Oiarleo A. M1tchell, II Gay 1 oru W. June• Ly le E. Jib tchell 

l.ou1s E Juat1ce 1 B.S. 'Aallace J. Moore 

Nnl'Dln F LorPt.z 1 8.S. John I ... l\ewhf'rser, 8.A. Howard Ji_ Narks fa1pne .It. Rector, e.s. Fdw.rd D. Mart1nohch James W. Walsh 

AdllunHtraUn Urut 

\t. E•elyn Michaud •• , •• , ••••••.•••••••• ,,, ••••••••• ,, .Administrative Officer 

Dora K. Madolf ••••••••••••••••••••••••••••••••••••• Admn1atrat.1'¥e Assistant Cirortrude Z. Re'lder ••••••••••••••• , • , , , ••••• , • , •••••• , •• Adm.inistrut1\e Clerk 

- Jc-an S. BuoLh •••• , ••••••• ,,, ••••••••••••••••••••••••••• Admin1strat1Te Clerk F. Patr'lria K. Peed ••••• ,,,.,, •••• ,., ••••• , ••• ,, ••••••• ,., •••• , ••• Librarian 

Aladel.1.ne \o. \'oull, B.A. ••••••••••••••••••••••••••••••••••• L1brary Assistant \'el• R. Huske,, B.A ........................ Infonaa.t1on and !a.atonal Clerk [\a C...sa'lrer, B.A •• ,, ••••••••• , , ••• , • , ••••••••• , ••• , •••••• Translator n.CLA) 

Earle Ir. Ki..,oll- •• ······--·-·······-·-····Praperty and Stock Centro! Clerk James R. Walker, M.A ••• ,, •••••••• , •••• MJScellaneous Of'f1ce Air.chine l)>erator 

Alhert H- Feld18n •• ----·······-lb•celhnews Office llachllll! !Pirator <UCLA) Mark H. Hennes ••• , •••• ,, •• , ••••• , ••• , .Miscellaneous Of(1ce Mlch1ne QJerator 

Se.::retar.1al Stall 

Ha.rr1Ptt W. Cot ton 

'hld...,d L. Dalton RetLv E. ~an 

Glor'lb E. Estes 

Vendla H. Gon1an1er 

Morpttt t. Gould Dorothy 11. Hibbard U.cy A. Moore 

llot.b A. Stafford Rne J_ Vweyard 

COMPUTATION LABORATORY 

Juhn Todd, B.S •••••••••••••••••••••••••••••••••••••••••••••••••••••••• Onef' 

1-ranz L. Alt, Ph.D •••• ,., ••••••••.•.• , ••••••••••••••••••..•• Ass1stnnt Oi1ef 

ML I Lon ALramowitr., Ph.D ••••••••••••• , •••••••••••• , ••••••• , •••• MathemLicJan Huth K. Andersm, 'I.A ••••••••••••••••••••••••••••••••••••••••• \tuthemat1c11111 

1-·rance~ R. Bauer, Ph.D •••••••••••. , •••••• , •••••••• , •• AL• Hesearc. • .h A:.sociaLe 'Ailliant H. Wrfee, Ph.D •••••• , •..••••••• , .• ,, •••••• ,.,., •.•••• Mathe:raLic1a11 

C".arl-l:.r1c fr6tw?rg, Ph.D., .•••••••. ,,., ••••••.. , •••••• NJ- Hesrarch Associate 

1\t1dre N. Glcyz11J, Ph.D ••• , ••••••••••••••••• ,, ••••••••• ,., ••••• Mathlliliratic.1an 

Peter llcnric1.,,, ••••••••• ,, •• ••••••.,, •••••••••• , ••• AU• Kesrarch Assoc.iate 

Alan J. Hoffman, Ph.D ••••••••• , ••• , •••••••••• ,, ••••••••••••••• MaLhe11111t1c1an 

Jolin \', Holberton, \1.A ••••••••• ••••••,.,, •••••••• ,, •••••••••• ,\1otheraat1cLon 

lb111ldO. l11r.son 1 D.S ••••••••••••••••••••••••••••••••••••••••• Atat~eD111t1c1an 

Josc)Jh H. Levin, Ph.D •••••••• ,.,.,., ••• ,, •••••• ,.,.,,, •••••••. '1it.the'lllltlr.Lan 

f.iurLay ~nnus, Ph.D.,, •••••• ,, ••••••••• ,,, •••• , •• ,, ••••••••••• r..tatherr.at1c1an 

&f.it.11&el S. ~lu11taJhano 1 B.A •••• , ••• , , ••••••••••••••• , , •• , •••••• Matl1eneL1c1on 

r;~o~~~~r~~~:. ~:?:::::: :: : : : : : : : : : : : : : : : : : : : : : : : : : : : : :~~~f::~!~~:! \1orr1s Newnat1 1 M.A •• , •• , , , , ••• , •••• , , •••• , , •••• , •••••• , , •••••• Mathrnut1c1an 

tr1tz Oherhctt1n~r 1 Ph.D •• ,.,, ••••• ,,, •••••••• ,, •••• AL• Research Associate 

Ph.il1p Rab111D11P1tz, Ph.D •••• •••••••••••••••••••••••••••••••••••Mulhenmt1r111n Herbert E. Salz.er, M.A •••••• ,,, •••••••••• , •••••••• , ••••••••••• \1otheraat1cian 

Daniel Sokolflll'sky, .,,,A ........................................ Mathemat ic1 an Leland W. ~r1nkJe- 1 8.A •••••••.•. , •••• , , . , , ••••••• , , , ••.•••••• ~thent 1c'lan 

lreM A. Step, M.A .••••••••••••••••••••••••••• , •••.••••••••• \tuthr.miat1c1un 

O..arleK J. S.1ft, Ph.D ••••••.••••.•••••••••••••••••• , ••••••••• )tatheraaL1c1an 

Joaeph H. 1lrepte1n, M.S ••••••••• , ••••••••• •• , ••••••••• , ••••••••••• Ph.ys1c111t Noraun A. 1'1egma11, Ph.D •••••••• , ••••• , •••••• ,., ••••••••••••••• Mathenet1c1an 

Helnut t1~landt, Ph.D ••••••••••••• ,, •••••••••• ,, ••••• AU• Research Assoc1atr Caai;iut.1n.f1 St.alf 

Ch.id• L- Ba)lor lla11s 0. BreQ!'r, A.A. 

llnlla L. Broolui, B.S. Robert B. Bryce, B_A. 

ll'ilb.,. f". Cahill, M.S. lluth f.. Capuano 

Kathryn O.notoph, B.S. .\nne R. Cock, 8.A. Natal.it= Cnplan, B.A. 

&nJarJ.n F. Cron, B.S. Melchotr J. DiCarlo-Cottone, B.S. Ira C. C1eliln, B.S. Lu..,J 0- Difford,·M-A. 

Mary M- Jlmlap, B.s_ I-ranees R. FrobrrgeT, B.A. 

Anni!: M. Futterman, B.A. 

Le011 G8'Jnen 1 B.S. 1.eaH F. Garrett, B.A. 

lhlbe II. Gill, M.S. EluahPth f. God.efroy 

Allen A. Goldstein, M.A. 

Lester H. Gordon, B.A. llanda P. Gordon, B.A. Stanley D. Grant, Jr- Willi .. G. Hall, a_s. Helen V. llmnar, D.S. Genene Hawkins, B.S. 

John llerohherger, M.S. "Viola D. Hoirse111en1 B. S. Renee Jasper, B.A. Dorothea H. Juauch, M.A. 

Lariiert S- •Joel, B.AGueat •orkera 

F.nzo L. Aparo 11- R. Arnetl.e 

Diclrson H. C.11 Secret.•r1•l St•ll 

M. C.ar lotte Cue Lilhan Sfoane 

•Amer1can [ni,TI11ralty 

Marlee E. Johnson, B.S. John A. Jord•n, B-A. Terry 11'- Lcdl•y, M-A- Nom:1n Levine, R.S. Dand S. l.1epmnn 

SmmPl MaHos, M.A. 

Ethel C. 11arden, B.A. hank B. \leek, M.A. "Theodore R. Mikrll, M.S. l\cnn1 t C. Ne l.s.Jn 

Peter J. O'Hara, B.S. Mury Orr Donald S. Park, B-ol. Maxine L. Paulsen, B.S. Anabelle W. PhelP", It.A. Solomon L- Pollack, B S • B. Stanby P111sch Donald J. Jlubin, M.S. Warren M. Russell 

Ruth C. Shepard, B-S- Wallace R. Sod.er-1unL, 'd.S. MiltlJll Ste.in Otto T. Steiner, ll.A. Frank J. Stoclunnl, B.A. Gretchen Stolle, M.A. 

Ellen V_ Stubblel•eld Sally Tnngou, B.S. 

Georl!" E. Tumor, B-S. Bernard Urh.n 

F.dna M. V1encp, B-A. Mary L. W-, B.A. Bertha H •. Wa I ter &th Zuckor, B.A. 

Dino Dunelh Jerold Mathews Michael Tikson 

Ethel lb tsky Mar3or1e E. Young 

MACHINE DEVELOPMENT LABORATORY 

Edward Tl. Cannm, l'h.D ...................... -- ... -····--·······---··-·0.ief ICarl (;o!dber11, M.A •••••••••••••••••••••••••••••••••••••••••••• ?tta.the•t1cian t.dith T. Norr'ls, B.A •••• ,., •••••• , , , •••••• , • , , ••••• , • , , ••••••• r.t.thematician Ida llhodes, M.A ••• ,,,, •••••••• ,,, •••• , •••••••• ,,, •••••••• , ....... the .. tician 

STATISTICAL ENGINEEHING LABORATORY 

Owrch11l Euenharl, .Ph.D._ ...................... _ .................... O.ief Joseph M. C.maeron, M.S •••••••••••••••••••••••••••••••••••••• Assiatant Cliiief 

Lola S. llaming, M.A .•• ·-·····--········-----······· .. ········-Technicol Aid K- L. C.ung, l'h.D ••••• --·····---·--·········---·····U'C:' Reaeorch Aaoocute William S. Connor, Jr., Ph.D •••••••• , •••••••••••••.••••••••••• Math-.t1cian Edp.r P. K1ng, Ph.D ••••••••• , ••••••••••••••••••••••••••••••••• •theratician Juliua Lleblel.D, M.A •••••• , .•••••••••••••••••••••••••••••• , ••• r.tathemat1cian F.ugene Lukaca 1 Ph.D.,,, ••••••••• ,, ••••••• ,,., ••••• Matbesmtical Stat1at1c'Jan 

r.lilry G. llll:trella, B.A., •••• ,,.,, ••••••• ,, •• , •• , ••• ,,, ••• , ••• , .llatheaat"Jc1an 

Frank Proacban, M.A .......................... -................ Mothemtician 

I. Richard SBYap, 11.S .... __ ·········-···········-··· .. --·····Motbemtician Dan Teichroew, M.A ••••••• , , ••••••••••••••••••••••••• IIC- &search Aaaocaate 

Moru .. T. C..rson .• -········----·······---·······----······----·····Caq.iter Yvette Bernardcm. •••••••••••••••••••••••••••••••••••••••••••••••••• Secretary 

Shuler C. Schleter, B.A.·-······---·············-·----·····-·-·--Secre"tory 

Virginia E. Soeeny ••••• ·-············· ····--······--········--····Secretary "l!niTerauy of North C.robna Inetatu.te of StatHt1ca, 

. ;. 

·-
• REF ID:A70085 

... 

Status of Projects 

dihedral and trihedral angles in a tetrahedron," by l w. Gaddum; 

submitted to a technical journal. 

Origin: NBS 

LANGUAGE TRANSLATION STUDY 

Task 1101-21-5104/52-1 

Sponsor: rtie Rockefeller Foundation . Full task description appears in Oct-Dec 1951 issue. 

11. 

Status: CONTINUED. Work continued on the investigation of word 

frequency both in Spanish and in German, under the direction of Dr. 

Bull and Dr. Oswald respectively. In Spanish, the analysis of the Set I 

Vocabulary bas be,n completed, and demonstrative charts for all examples have been made. Analysis of the Set I Vocabulary indicates that, w:Ha 

the present state of the computer art, it is unrealistic to consider 

translation of general subject articles by means of a single fixed ~ocabulary. · In German, the consiruction of a restricted German technical 

glos1ar7 (for the field of ~rain surgery) has almost reached cGmpletion. It is planned' to attempt to ascertain the number of nouns required in 

the vocabulary in order to "understand" any techni~al article in this 

field. , 'During the quarter Dr. Y. Bar-Hillel, of the Massachusetts 

Institute of Technology, visited the project in ord0r to exchange orally ideas in the field of mechanical translation. Several group and individual conferences were held between Dr. Ber-Hillel and Institute 

for Numerical Analysis personnel, with RAM> personnel also participating in the group conferences. 

3. Developa;ent 

NATIONAL BUREAU OF STAN>ARDS WESTERN AUTOMATIC COMPUTER (SWAC) (Previously listed as Air Material Command Computing Machine) 

Task 1101-34-5103/49-1 

(formerly 11 .1/22-49-1) 

Origin: Flight Research Laboratory, Wright Air Development Center, USAF 

Sponsor: " " " 

Full task description appears in Apr-lun 1949 issue. 

Status: CONTINUED. The accelerating voltage in-the cathode-ray tubes of the Williams' .tube memory system of the SWAC has been lowered 

in hopes of decreasing the effect of blemishes on the tubes which will 

not store dashes. This decrease in the accelerating voltage bas improved flaw conditions but has also given an accompanying increase in 

spillover. Under these circumstances the stock of cathode-ray tubes 

had to be re-sorted to obtain the best usable tubes. Several 3KP1 tubes 

have been used in the computer on an experimental basis. These have 

given good performance with respect to spillover. In an experimental 

test unit a defocus-focus system (combined with the dash system now in use) 
• 

12 

REF ID:A700~ 

• 

Status of Projects 

is being tried out. In the few units tested this system decreases the 

effect of· the flaws markedly and, although there is an increase in spillover effects, this may not be too great to preclude the use of the 

system. However, additional experiments will be made before a change is 

made to this new syste~. 

The incorporation of the magnetic drum into the computer systen is well under way. A new flipflop using a 2C51 tube with output levels 

clamped between 0 and -40 volt levels has been developed on a plug-in unit for use in the magnetic drum circuitry. The other logical gating circuitry bas also been redesigned so that it can be placed on simple plug-in units. The plug-in units and the panels for the drum system ere 

in the process of construction. Initial circuitry on the drum will utilize a pulse frequency of approximately 60 to 70 kc. which will give a 

distinct advantage in that it will simplify the circuit design. The . system being constructed initially will give a memory of about 5000 words 

with an average access time of approximately 500 microseconds per word. 

This low access time will be obtained by transferring a sequence of 

numbers during one revolution, starting the actual transfer at any arbitrary word and stopping at the end of one revolution. If'later the pulse frequency is increased to about 125 kc., the maximum memory will be close 

to 10,000 words with an approximate access time of 250 microseconds 

per word., 

The new motor generator set which had been on order for nearly 

a year was delivered and installed at the end of the quarter. There is 

no operational data as yet as to the effect of this new pow~r supply on 

the performance of the SWAC. 

LOGICAL Nal'ATION AM> BLOCK DIAGRAM SYllBOLISM FOR A.D.C.M. 

Origin: NBS 

Task 1101-34-5103/49-2 

(formerly ~1.1/22-49-2) 

Sponsor: Flight Research Laboratory, Wright Air Development Center, USAF 

Full task description appears in Apr-lun 1949 issue. , .. Status: CONTINUED. Distribution continued of the pr'l~inary 

lists of terminology and block diagram symbols to be used in connection 

with automatic computing machines. 

Publications: The preliminary lists mentioned above are obtainable 

in manuscript form from the Institute for Numerical Analysis. 

MATHIEU FUM:TIONS II 

Task 1101-53-1101/45-1 

(formerly 11 .1/2-45-1) 

Origin: Applied.Mathematics Panel, NDRC 

Sponsor: Flight Research Laboratory, Wright Air Development Center, USAF. 

Full task description appears in Apr-lun 1949 issue. 

Status: INACTIVE. For status to date see bet-Dec 1950 issue. 

... ~ r •'~ 
• 

• REF ID:A70085 • 

424 North George llason Drive · Arlington 3, Virginia 

18 llq 1951 

Hr.. Harold P. Edmundson 

4553i West 18th Street 

Loa Angeles 19, California 

Dear Mr. Edmundson: 

'!hank ;vou tor the brochure 0n SWAC. I have passed it to the 

appropriate offices tor their information. 

With reference to TOur former associates whom you mentioned, 

Mr. C&ll1mahos am Ur. Duin-are presentl.J employed by this Agency, 

and I have obtained their home 8ddressea, in order that you mq 

contact them there, it 7011 wish: _ 

Mr. Fdgar C. Duin 

1525 'l)'ler Avenue 

Falla Church, Virginia 

Mr. Iambrcs O. rALlU•hos 

1524 RooseTelt Avenue 

Falls Church, Vi_rg1nia 

In regard to J'OUl" request tor a SIGVAN, I am 801'1'7 to have to 

tell you that there is at present no authority tor·dietribut;ing" material on a RESTRICTED level to civilians outside channelsJ 

therefore this publication is not available tor serding to you. Perhaps ;rou can obtain other ata.tistical studies which will serve 

somewhat the purpose you had in view. 

Sincere~ yours, 

William F. Friedman 
• 

i~lr. \,illiam F. F·riedman 

Armed Forces Security Agency ~ashington 25, n.c. 

Dear Mr. Friedman: 

REF ID:A70(}LS 

.. 

30 April 1951 

It was most kind of you to comment so encouragingly 

about the problem of a language translation .machine in your 

--~-r;a:s--c~-·rett-e-r-.---Th_e_,,I1'.~crt11a:-t"" 'th e-s e art·1·rCUJ.-"'t-~"t1frie s·rnu=st·J.mpo 5·9-~--- ~ - ~--

a heavy work load on you makes me all the more appreciative. 

I feel sure that my superiors at INA concur .•. 

At the risk of further monopolizing your time I will 

ask two quesT.ions. 'i'he first one concerns two former comrades in arms of liorld ljJar II- namely, Lambros D. Callimahos 

and Edward C. Duin. I last understood t.hat they were working 

for you. Do you know of their whereabouts? Secondly, could 

you send me a copy of the publication which went by the short 

title SIGVAN? Dr. Kullback recognized my interest in statistics when I served under him, and made one available to me. 

I would like to study it again to maintain ray state of readiness. 

I have enclosed a small brochure on our machine called 

::3\'~AC. Also, I would like to mention that 1~iiss Gertrude Kirtland of AF'SA has sent me some employment forms \•Thich I have 

completed and returned. It seems that ;_i;r. \Jilliam G. Bryan 

of the n..mer. Cryptogram Assoc. had suggested my name. 

Sincerely yours, 

~~Pi~