- The Miocene Purple Mountain Flora of Western Nevada (University of California Publications in Geological Sciences)
- Origin and Relationships of the California Flora
- The Eocene Thunder Mountain Flora of Central Idaho (University of California Publications in Geological Sciences)
- The Middle Miocene Pyramid Flora of Western Nevada (University of California Publications in Geological Sciences)
- The Early Miocene Buffalo Canyon Flora of Western Nevada (University of California Publications in Geological Sciences)