- Sketch Of The Geology And Paleontology Of The Valley Of Mackenzie River
- Remarks On Prof. Geinitz's Views Respecting The Upper Palaeozoic Rocks And Fossils Of Southeastern Nebraska
- Collected Papers, Volume 1...
- Pal�ontology of the Upper Missouri: A Report Upon Collections Made Principally by the Expeditions Under Command of Lieut. G. K. Warren, U.S. Top. Engrs., in 1855 and 1856. Invertebrates
- Pal�ontology