- Origin and Relationships of the California Flora
- The Eocene Thunder Mountain Flora of Central Idaho (University of California Publications in Geological Sciences)
- A Miocene (10-12 Ma) Evergreen Laurel-Oak Forest from Carmel Valley, California
- The Oligocene Haynes Creek Flora of Eastern Idaho (University of California Publications in Geological Sciences)
- Contributions to the Neogene paleobotany of central California








