Geology of Beaver county, Oklahoma, by Chas. N. Gould and John T. Lonsdale. Fossil leaves from Beaver county, by E. W. Berry.
Agriculture of Beaver county, by Ernest Slocum. History of Beaver county, by F. C. Tracy.
- Norman, 1926.
- 71 p. XVI pl., maps (1 fold.) 24 cm.
- Oklahoma. Geological survey. Bulletin no. 38 .