9 AMERICAN CYANAMID COMPANY

 

1937 WEST MAIN STREET

STAMFORD, CONN.

TELEPHONE
STAMFORD 4-614!

 

July 7, 1948

Dr. Joshua Lederberg
Department of Genetics

The University of Wisconsin
College of Agriculture
Madison 6, Wisconsin

Dear Josh:

In reply to your letter of July 1, we are sending
you a @-¢. sample of Phosphine GNR.

The sample contains an appreciable amount of water-
insoluble impurities which can be removed by filtration.

With best regards,

Sincerely,

Rey

RRR:aj R. R. Roepke