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