1. "Aztec Pass," Western Arizona, 1,330 miles from Missouri River. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1867–1868] Institution: Boston Public Library
2. Canada de las Uvas, or Tejon Pass in Sierra Nevada, California, 1,690 miles west of Missouri River. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1868] Institution: Boston Public Library
3. Canon in Tehachapa Pass, crossing of Sierra Nevada, California, 1,712 miles west of Missouri River. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1868] Institution: Boston Public Library
4. Crossing of the Sierra Nevadas, California; "Tehachapa Pass," 1,720 miles west of Missouri River. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1868] Institution: Boston Public Library
5. Crossing of the Sierras at Tehachapa Pass, California, Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1868] Institution: Boston Public Library
6. Decesending the Western Slope of the Sierra Nevada, in Tehachapa Pass, California, 1,710 miles from Missouri River. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1868] Institution: Boston Public Library
7. Entrance to Panoche Grande Pass, Coast Range from Tulare Valley, California, 1,850 miles west of Missouri River. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1868] Institution: Boston Public Library
8. In Panoche Grande Pass, Coast Range of California, February, 1868, 1,850 miles west of Missouri River. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: 1868 Institution: Boston Public Library
9. Marshall Pass and Mt. Ouray Creator: Jackson, William Henry, 1843-1942; W.H. Jackson Photograph and Publishing Co. Format: Photographs Collection: Photographs of the American West Date: [ca. 1879–1894] Institution: Boston Public Library
10. Mount Agassiz, Arizona, on the Mogoyon Range, in "Tonto Pass," near highest summit of the line, which is 7,510 feet above tide; December, 1867; 1,200 miles west of... Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: 1867 Institution: Boston Public Library
11. Near Dunlap's Ranche, crossing of Sierra Nevada at Tehachapa Pass, California, 1,720 miles west of Missouri River. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1868] Institution: Boston Public Library
12. Oaks in Tehachapa Pass, crossing of the Sierra Nevadas, California, 1,720 miles from Missouri River. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1868] Institution: Boston Public Library
13. "Panoche," in the Coast Range, California, 1,850 miles west of Missouri River. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1868] Institution: Boston Public Library
14. "Priest's Gap" in Chupaynas Ridge, foot hills of the Rocky Mountains, 758 miles from Missouri River. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1867] Institution: Boston Public Library
15. The Sierra Nevadas, at Tehachapa Pass, California, 1,700 miles from Missouri River. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1868] Institution: Boston Public Library
16. Sinks of Tehachapa, California. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1868] Institution: Boston Public Library
17. Summit of Sierra Nevada at Tehachapa Pass, California, February, 1868; 4,008 feet above the ocean, 1,701 miles from Missouri River. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: 1868 Institution: Boston Public Library
18. Tehachapa Pass in Sierra Nevada, California. 1,730 miles west of Missouri River. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1868] Institution: Boston Public Library
19. Tehachapa Pass, in the Great Basin at eastern foot of Sierra Nevada, 1,690 miles from Missouri River. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1868] Institution: Boston Public Library
20. Tehachapa Pass, in the Sierra Nevada, California. Creator: Gardner, Alexander, 1821-1882 Format: Photographs Collection: Photographs of the American West Date: [ca. 1868] Institution: Boston Public Library