Official websites use .gov A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
A standard security form for positions at sensitive federal facilities in the 1950s, such as the Brookhaven National Laboratory. McClintock filled out this form during the period when she began genetic research on maize in Latin America with the Rockefeller Foundation and National Science Foundation.
Original Repository:
The American Philosophical Society. Library. Barbara McClintock Papers