SCIENTIFIC EXPEDITION TO NORTHWESTERN COLORADO 1 53 



White, C. A., "Report on the paleontological field-work for the season of 1877," 

 Eleventh Ann. Rept. U. S. Geol. and Geog. Surv. Terr. (Hayden Survey) for 1877, 

 pp. 161-272, especially pp. 207-14, 1879. [Discusses fossils of Danforth Hills, 

 White River and Yampa River, among others. Other references to fossils of 

 the region are occasional in other publications of the Hayden, King and Wheeler 

 Surveys.] 



-, "Report on the geology of a portion of northwestern Colorado," Tenth Ann. 



Rept. U. S. Geol. and Geog. Surv. Terr. (Hayden Survey) for 1876, pp. 5-60, 

 1878. [Includes also considerable matter on agricultural resources, etc.] 

 -, "On the geology and physiography of northwestern Colorado and adjacent 



parts of Utah and Wyoming," Ninth Ann. Rept. U. S. Geol. Surv. for 1887-J 

 pp. 677-712, 1889. 



