- Speak To the Earth and It Will Teach You: The Life and Times of Earl Douglass, 1862-1931
- The SNOWDEN-DOUGLASS Sunday School Lessons 1953 / Practical Expositions of the International Sunday School Lessons
- New Merycoidodonts From The Miocene Of Montana
- Collected Papers, Volume 1
- The Neocene lake beds of western Montana and descriptions of some new vertebrates from the Loup Fork ..