A short history of the Division of Fishes, United States National Museum, December 15, 1856 to December 15, 1956. Copeia, 1961 1961: 120-123. 214 [Zoological Record Volume 98]
Reproductive mechanism of unisexualand bisexual strains of the viviparous fish Poeciliopsis. Evolution, 15 1961: 302-325. [Zoological Record Volume 98]