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Coal fields of Grand Mesa and the West Elk Mountains, Colorado

Lee, Willis T. (Willis Thomas), 1864-1926 author.
[Washington, D.C.] : Department of the Interior, United States Geological Survey, 1912. 1912

Coal resources of the Raton coal field, Colfax County, New Mexico

Lee, Willis T. (Willis Thomas), 1864-1926 author.
[Washington, D.C.] : Department of the Interior, United States Geological Survey, 1924. 1924

Correlation of geologic formations between east-central Colorado, central Wyoming and southern Monta

Lee, Willis T. (Willis Thomas), 1864-1926 author.
Washington : Department of the Interior, U.S. Geological Survey, 1927. 1927

Contributions to the geography of the United States, 1923-1924

Campbell, Marius R. (Marius Robinson), 1858-1940, author.
[Washington, D.C.] : Department of the Interior, United States Geological Survey, 1925. 1925

Geologic reconnaissance of a part of western Arizona

Lee, Willis T. (Willis Thomas), 1864-1926 author.
Washington, D.C. : Department of the Interior, United States Geological Survey, 1908. 1908

Geology and paleontology of the Raton mesa and other regions in Colorado and New Mexico

Lee, Willis T. (Willis Thomas), 1864-1926 author.
Washington : Department of the Interior, United States Geological Survey, 1917. 1917

Guidebook of the western United States.

Lee, Willis T. (Willis Thomas), 1864-1926 author.
[Washington, D.C.] : Department of the Interior, United States Geological Survey, 1915. 1915

The Manzano group of the Rio Grande valley, New Mexico

Lee, Willis T. (Willis Thomas), 1864-1926 author.
Washington, D.C. : Department of the Interior, United States Geological Survey, 1909. 1909

Contributions to the geography of the United States, 1922

Campbell, Marius R. (Marius Robinson), 1858-1940, author.
[Washington, D.C.] : Department of the Interior, United States Geological Survey, 1923. 1923

Relation of the Cretaceous formations to the Rocky Mountains in Colorado and New Mexico

Lee, Willis T. (Willis Thomas), 1864-1926 author.
Washington : Department of the Interior, United States Geological Survey, 1916. 1915