- The early Miocene Buffalo Canyon flora of western NevadaDaniel I. Axelrod
- Contributions to the Neogene paleobotany of central CaliforniaDaniel I. Axelrod
- Origin and relationships of the California floraPeter H. Raven, Daniel I. Axelrod
- New Pleistocene conifer records, coastal CaliforniaDaniel I. Axelrod
- History of the maritime closed-cone pines, Alta and Baja CaliforniaDaniel I. Axelrod
