Mayr, Ernst, 1904-; Ewing, W. Maurice (William Maurice), 1906-; Bucher, Walter H. (Walter Herman), 1888-; Caster, Kenneth E.; Dunbar, Carl Owen, 1891-; Kay, Marshall, 1904-1975.; Simpson, George Gaylord, 1902-; Axelrod, Daniel I.; Just, Theodor.; Camp, Wendell Holmes, 1904-; Darlington, Philip Jackson, 1904-; Emerson, Alfred Edwards, 1896-; Schaeffer, Bobb, 1913-; Dunkle, David Hosbrook.; Colbert, Edwin Harris, 1905-; Romer, Alfred S.; Society for the Study of Evolution. Meeting (1949 : New York, N.Y.)
(New York : [American Museum of Natural History], 1952)