1. Defining the Pen Islands Caribou Herd of southern Hudson Bay
2. Description of new North American mammals.;Allen;Bulletin of the American Museum of Natural History,1896
3. A new caribou from the Alaska Peninsula.;Allen;Bulletin of the American Museum of Natural History,1902
4. The Peary caribou (Rangifer pearyi Allen).;Allen;Bulletin of the American Museum of Natural History,1908
5. The barren-ground caribou of Labrador.;Allen;Proceedings of the New England Zoölogical Club,1914