The Plagiostomia (Sharks, Skates and Rays). Memoirs of the Museum of Comparative Zoology at Harvard College, 36: 528 p., 77 pl.
Interrelationships of the elasmobranchs with a key to the Order Galea. Bulletin of the American Museum of Natural History, 74: 25–138, 66 figs, 51 pls, 2 tabs
Islet tissue in the pancreas of the Elasmobranchii. The Anatomical Record, 76 (1): 1–15
A synopsis of the monogenetic trematodes. Transactions of the Zoological Society of London, 25: 185–600