- Walcott, Charles D., 1900, Twentieth Annual report of the United States Geological Survey, 1898-1899: Part II - General geology and paleontology: Annual Report 20, v, 953 p.; 193 plates,
- Walcott, Charles D., 1900, Twentieth Annual report of the United States Geological Survey, 1898-1899: Part III - Precious-Metal Mining Districts: Annual Report 20, v, 595 p.; 77 plates; col. maps, (some folding); illus.; figs.,
- Walcott, Charles D., 1900, Twentieth Annual report of the United States Geological Survey, 1898-1899: Part IV - Hydrography: Annual Report 20, 660 p.,
- Walcott, Charles D., 1900, Twentieth Annual report of the United States Geological Survey, 1898-1899: Part V - Forest reserves: Annual Report 20, 498 p.; 2 figs.; 159 plates,
- Walcott, Charles D., 1900, Twentieth Annual report of the United States Geological Survey, 1898-1899: Part VII - Explorations in Alaska in 1898: Annual Report 20, 509 p., illustrated with B/W photographs and numerous map plates, fold-out maps in pocket,
- Walcott, Charles D., 1900, Twenty-First Annual report of the Director of the United States Geological Survey, 1899-1900: Part I - Director‘s Report, Including Triangulation, Privary Traverse, And Spirit Leveling: Annual Report 21, xi, 608 p.; 3 plates; 1 fig.,
- Walcott, Charles D., 1900, Twenty-First Annual report of the Director of the United States Geological Survey, 1899-1900: Part II - General Geology, Economic Geology, Alaska: Annual Report 21, 522 p.; figs; 4 maps,
- Walcott, Charles D., 1900, Twenty-First Annual report of the Director of the United States Geological Survey, 1899-1900: Part V - Forest Reserves: Annual Report 21, 711 p.; 136 maps and photos,
