- The Stratigraphy Of The Western American Trias (1907)
- The Carboniferous Ammonoids Of America
- Festschrift Adolf V. Koenen Gewidment Von Seinen Schuelern Zum Siebzigsten Geburtstage Am 21. Maerz 1907.
- The Development Of Lytoceras And Phylloceras
- The Middle Triassic Marine Invertebrate Faunas of North America