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1875 Map, hot springs, United Sta … Exploration Book Map of hot springs localitie … |
1875 Pebbles carved by sand, Colo … Exploration Book Pebbles carved by sand, Colo … |
1875 Rock carved by the Colorado. Exploration Book Rock carved by the Colorado. … |
1875 Perched rock, Rocker Creek, … Exploration Book Perched rock, Rocker Creek, … |
1875 Lava, Lower Sevier, Utah. Exploration Book Lava from valley of Lower Se … |
1875 Sketch, Canon San Diego, Ojo … Exploration Book Sketch of Canon San Diego, O … |
1881 Section along 36th parallel … Exploration Book Section along 36th parallel … |
1881 Section along 37th parallel, … Exploration Book Section along 37th parallel … |
1874 A geological map of the Blac … Exploration Book A geological map of the Blac … |