1. The flora of the Denver and associated formations of Colorado Author/Creator: Knowlton, Frank Hall, 1860-1926 Publication/Creation: Washington : U.S. Gov't. Print. Off, 1930 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 153-156. Access & Availability: Loading
2. Fossil plants from the Tertiary lake beds of south-central Colorado Author/Creator: Knowlton, Frank Hall, 1860-1926 Publication/Creation: Washington : Govt. Print. Off, 1923 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 131 A-H. Access & Availability: Loading
3. Revision of the flora of the Green River formation : with descriptions of new species Author/Creator: Knowlton, Frank Hall, 1860-1926 Publication/Creation: Washington : Govt. print Off, 1923 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 131 A-H. Access & Availability: Loading
4. The Laramie flora of the Denver basin, : with a review of the Laramie problem, Author/Creator: Knowlton, Frank Hall, 1860-1926 Publication/Creation: Washington : Govt. Print. Off, 1922 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 126-130. Access & Availability: Loading
5. A catalogue of the Mesozoic and Cenozoic plants of North America Author/Creator: Knowlton, Frank Hall, 1860-1926 Publication/Creation: Washington : Govt. Print. Off, 1919 Resource Type: Book Access & Availability: Loading
6. A fossil flora from the Frontier formation of southwestern Wyoming Author/Creator: Knowlton, Frank Hall, 1860-1926 Publication/Creation: Washington : Govt. Print. Off, 1917 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 108-110. Access & Availability: Loading
7. Contributions to the geology and paleontology of San Juan County, New Mexico : 4. Flora of the Fruitland and Kirtland formations Author/Creator: Knowlton, Frank Hall, 1860-1926 Publication/Creation: Washington : Govt. Print. Off, 1916 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 96-98. Access & Availability: Loading
8. The flora of the Fox Hills sandstone Author/Creator: Knowlton, Frank Hall, 1860-1926 Publication/Creation: Washington : Govt. Print. Off, 1916 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 96-98. Access & Availability: Loading
9. The Jurassic flora of Cape Lisburne, Alaska Author/Creator: Knowlton, Frank Hall, 1860-1926 Publication/Creation: Washington : Govt. Print. Off, 1914 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no.84-87. Access & Availability: Loading
10. Fossil forests of the Yellowstone national park : Department of the interior. Office of the secretary Author/Creator: Knowlton, Frank Hall, 1860-1926 Publication/Creation: [Washington] : [Govt. Print. Off.], 1914 Resource Type: Book Access & Availability: Loading