The spring General Meeting of the American Philosophical Society is April 25–27. Read the program and live stream the proceedings. 

Certificate from U.S. Army Corps of Engineers

Manhattan District, to Rose C. L. Mooney, August 6, 1945

Recognizing wartime service

Rose Mooney-Slater received this certificate for her work on the Manhattan Project. In 1943 and 1944, she studied uranium and plutonium at a U.S. government lab at the University of Chicago.

APS. Gift of the Slater estate, 1985.

Certificate from U.S. Army Corps of Engineers