- eBookThe Feminist Bird Club's Birding for a Better WorldSydney Anderson
- eBookMammals of Mesa Verde National Park, ColoradoSydney Anderson
- eBookSubspeciation in the Meadow Mouse, Microtus pennsylvanicus, in Wyoming, Colorado, and Adjacent AreasSydney Anderson
- eBookMammals of Mesa Verde National Park, ColoradoSydney Anderson
- eBookThe Baculum in Microtine RodentsSydney Anderson
- eBookExtensions of Known Ranges of Mexican BatsSydney Anderson
- eBookSubspeciation in the Meadow Mouse, Microtus pennsylvanicus, in Wyoming, Colorado, and Adjacent AreasSydney Anderson
- eBookMammals of the Grand Mesa, ColoradoSydney Anderson
- eBookRecords of Harvest Mice, Reithrodontomys, from Central America, with Description of a New Subspecies from NicaraguaJ. Knox Jones
- eBookSubspeciation in the Meadow Mouse, Microtus montanus, in Wyoming and ColoradoSydney Anderson
- eBookSubspeciation in the Meadow Mouse, Microtus montanus, in Wyoming and ColoradoSydney Anderson
- eBookRecords of Harvest Mice, Reithrodontomys, from Central America, with Description of a New Subspecies from NicaraguaJ. Knox Jones
- eBookThe Baculum in Microtine RodentsSydney Anderson
- eBookNeotropical Bats from Northern MexicoSydney Anderson
- eBookSubspeciation in the Meadow Mouse, Microtus montanus, in Wyoming and ColoradoSydney Anderson