daly 2, (1948.
Dr. Je Cy Woodruff,
Director, dicroblologioal Research,
Merck and Coe, ing.
Ralway, RN. Je
Dear Dr. Hoodruff,

We are trying to losate som 5—nethyltryptophane for use in gome eperi-
ante on the inhibition of enzyme formation in F, col4. 100 ~ 200 Og. would
enffico, tie were referred, mmther vague&y to lerek. Do you have this compound
@or sale, or would the quantity mentioned be othereisc available for experi~
mental use? If not, can you refer us to encther source? .

Yours sincerely

Josma Lederberg, :
Asgistent Professor of Genetics,