National Museum of Nuclear Science & History
Mary P. Frankel was one of the “human computers” at Los Alamos during the Manhattan Project. In the spring of 1943, Frankel and her husband, Stan, an American physicist who later became a computer scientist, arrived at Los Alamos.
D. G. Perkins worked for the United States Engineer District Office.
In the 1944 Hanford Phone Book, he is listed under R. C. Theil. In the 1945 Hanford Phone Book, he is listed under R.