Roope, Percy M., 1897-1987
Percy M. Roope letter to Melba Phillips, 1986.
Percy M. Roope letter to Melba Phillips on Arthur Gordon Webster.
Phillips, Melba, 1907-2004
Webster, Arthur Gordon, 1863-1923
Physicists. lcsh
AIP-ICOS
American Institute of Physics. Niels Bohr Library & Archives. One Physics Ellipse, College Park, MD 20740, USA