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1 Herbert E. Gregory Book 13: Photographs taken on Yale Peruvian Expeditions, 1911-19151911; 1912; 1913; 1914; 1915; 1916; 1926Image
2 Panorama of head of Johnson Creek, from West Mountain. Abajo Mountains. 19151915Image
3 Panorama, looking west from Camp Jackson. West Peak in left center. Abajo Mountains. Utah, San Juan, 1915.1915Image
4 Bark Wash, Utah 19431943Image
5 Bowers Knoll; Volcano viewed from northwest. Garfield County, UT. 19441944Image
6 Brian Head formation, branch of Asay Creek; lies beneath basalt flows. Garfield County, UT, 19441944Image
7 Card players, Paria Valley camp, 19431943Image
8 Chinle formation, Petrified Forest member. Head of Fossil Wood Creek. Kane County, UT. 19431943Image
9 Contact of Kayenta formation (foreground) and Navajo sandstone Park Wash above the mouth of Five Pines Wash. Kane County, UT. 19431943Image
10 Cretaceous shales (tropic formation). Antimony Canyon, Garfield County, UT. 19431943Image
11 East side of Lone Rock on Wah Weap Creek1943; 1944; 1945Image
12 End of lava flow 6 miles long in Black Creek Valley1943; 1944; 1945Image
13 Eroded flank of the East Kaibab monocline at the junction of Paria River and Cottonwood Creek (left center). The sequence is Navajo (left), upper Jurassic (largely eroded), Dakota, Tropic, and Straight Cliffs. Kane County, UT, 19441944Image
14 Features of the East Kaibab monocline [and] Structural relations of rocks along Utah-Arizona boundary1943; 1944; 1945Image
15 Flat lying Upper Jurassic (foreground) and Cretaceous strata bed abruptly upward against the Navajo on the flank of the East Kaibab monocline (left sky line). Table Cliffs (right sky line) is about 50 miles north. Paria Valley near Adairville. Kane County, UT. 19441944Image
16 Herbert E. Gregory Book 10: San Juan, Zion, Capitol Reef, 1915-19381915; 1916; 1917; 1918; 1919; 1920; 1921; 1922; 1923; 1924; 1925; 1926; 1927; 1928; 1929; 1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938Image
17 Herbert E. Gregory Book 11: Colorado Plateau, 1938-19421938; 1939; 1940; 1941; 1942Image
18 Herbert E. Gregory Book 12: Colorado Plateau, Province, 1942-19441942; 1943; 1944Image
19 Herbert E. Gregory Book 1: Colorado Plateau and Grand Canyon 1900, Navajo-Hopi 19091900; 1909; 1928Image
20 Herbert E. Gregory Book 2: Navajo-Hopi, San Juan 19091909Image
21 Herbert E. Gregory Book 2: Navajo-Hopi, San Juan 19091909Image
22 Herbert E. Gregory Book 3: Navajo-Hopi, Arizona-New Mexico, 19091909Image
23 Herbert E. Gregory Book 4: Navajo, San Juan, 19101910Image
24 Herbert E. Gregory Book 5: Navajo, 19111911Image
25 Herbert E. Gregory Book 6: Navajo, 19131913Image
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