1. On geographical variation in color among North American squirrels, with a list of the species and varieties of the American Sciuridae occurring north of Mexico;Allen;Proceedings of the Boston Society of Natural History,1874
2. Sciuridae;Allen,1877
3. Report on the mammals collected in northeastern Siberia by the Jesup North Pacific Expedition, with itinerary and field notes, by N. G. Buxton;Allen;Bulletin of the American Museum of Natural History,1903
4. Mammals collected in Alaska and northern British Columbia by the Andrew J. Stone expedition of 1902;Allen;Bulletin of the American Museum of Natural History,1903