
Sources: 1940-1957, Edwin P. Hartman, Adventures in Research: A History of Ames Research Center, 1940-1965, NASA SP-4302 (Washington, 1966) (figures are approximate)
1958-1966, NASA Historical Data Book, 1958-1968, VoL 1, NASA Resources, SP-4012 (Washington, 1976)
1967-1976, Resources Management Office