Movember 4, 1955

Deen 0. A. Elvehjen
Gratuate School & Renearch Commu ttec
Bascom Hall

Dear Dean Elvahjent

I am submitting this letter as - request for sapsort fer 2 re-
neerch leave during the Spring semester in 1956. My present tlen would
be to take this leave from February 1 to April 3, but it mey be neceso
sary to defer the three-month interwal fer a fer weeks or a month, de-
pending on the statue of the remodelling of the laboratory in the Genetice
Building. The purpose of the leave would be to collaborste vith Frofessar
E. L. Tatum xf Stanford Universi ty.

Sone explanation is epproprinte for the deleyed substiesion of this
request. After Frofessor Tatum hed invited me to make this visit to hi«
laborstery, I met him in Yashingten lest spring and we discussed poasible
finencial srrengenente. I indteated thet I might apply te the Gratunts
Sehool for supsort if he would underteke te carry the aslary of Dr. %. HK.
Lederberg (who is a Projact Aasociste here on finde from a Roekefeller
Foundation grant and whe has alse had considerable experience vi th
Heurespera). He sugeeated that I postpone aprliiestion until ho explored
other possibilities of support. Later I received « letter from him which
I interpreted te mean that he had been sugceasful, end assented accordingtiy.
I met Professor Tetum again Monday at the International Symposium on “neymes
at Detroit, and we discevered there had been a ai gunderstendling, an’ he hed
had the fomrescion T hed anvliet suacessfully to the Gredunte Sehcel here.

I have prenered thie arylisation at the eerlicet possible monent fer your
considerations we have meanwhile proceeded with discussions on resesrch
tetaile on eptinietic assumptions. I have siso asked frefeeser Tatum
write you ae well to confirm his interes’ in thie proneanl.

The support requested in simply to continue ay regular selary while
I work et Stanford. I expect to ure veoation leave time for traveling
back and forth, end may be eble te defray some of the trevel expenees vi th
honoraria from lectures en reute. Prefecsor Tatun will have arranged for
eny research expenses st Stenford, as well «ze for the nasociateshir for
Mre. Lederbdery.

I am enclosing = program for the work to be done at Stanford. Next
spring would be « favorable time for such a visit in many reepeete. I fo
not have too many graduate studentea who are just starting or finishing,
am the laboratory routine can be left in charge of Dr. HM. lL. Morse aa
Freject Asscelate,

Youre sincerely,

Joshua Ledar'’ber x
/n Professor of Genetics
ec HH. BR. Irwin
KE. L. Tatum