Donald R. Young,
for The Technique of Race Relations and Limiting Factors in the Development of the Social Sciences
John Frederick Lewis Award
Established by a gift from the widow of John F. Lewis, to honor the outstanding maritime lawyer who played a major role in various cultural institutions in Philadelphia. Since 1981 the award has recognized the best book published by the Society in a given year.
1948
1946
Enrico Fermi,
for The Development of the First Chain Reacting Pile
1944
Samuel Noah Kramer,
for Sumerian Literature: a Preliminary Survey of the Oldest Literature in the World, Sumerian Mythology: a Study of Spiritual and Literary Achievement in the Third Millennium B.C.
1943
George Gaylord Simpson,
for The Beginnings of Vertebrate Paleontology in North America
1941
George Howard Parker,
for Integumentary Color Changes of Elasmobranch Fishes of Mustelus, Melanophore Responses and Blood Supply (Vasomotor Changes), On the Neurohumors of the Color Changes in Catfishes and on Fats and Oils as Protective Agents for such Substances
1940
Earle Radcliffe Caley,
for The Composition of Ancient Greek Bronze Coins
1939
Henry Norris Russell,
for Stellar Energy
1938
Arthur J. Dempster,
for New Methods in Mass Spectroscopy and Further Experiments on the Mass Analysis of the Chemical Elements
1937
Ralph E. Cleland,
for Cyto-Taxonomic Studies on Certain Oenotheras from California and A Cytogenetic and Taxonomic Attack upon the Phylogeny and Systematics of Oenothera (Evening Primrose) with Special Reference to the Sub-genus Onagra
