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TitleDateType
1 Exploration of the Colorado River of the West and Its Tributaries Explored in 1869, 1870, 1871, and 1872, Under the Direction of the Secretary of the Smithsonian Institution.1875Text
2 Page 1871
3 Page 21401878-09-03
4 Page 1870
5 Page 1966
6 Scientific American Supplement, Vol. VI, No. 131.1878-07-06Text
7 Page 193, The Grand Canon of the Colorado
8 Page 21411878-09-03
9 Page 1965
10 Page 1918
11 Page 1919
12 Page 1869
13 Page 21391878-09-03
14 Page 1967
15 Page 1917
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