Photograph by Dr. L. F. Noble is a view looking down Colorado river at the Crossing of the Fathers, showing bench at summit of Navajo SS. formed by soft beds at the horizon of the 'Marine Jurassic,' 1922. Photo from Herbert E. Gregory Book 8: 1915 - 1924
Photo shows sandstone (probably Navajo) and overlying beds in canyon about 12 miles east of Utah Col...
Photo of Paria River below White Rock Spring in Kane County, Utah, in 1944. The wall of Navajo sands...
Photo shows a view looking across Colorado River at mouth of White Canyon, San Juan County, Utah, 19...
Photograph by Dr. L. F. Noble showing a view up Colorado River from a point 3 miles east of Cottonwo...
Photograph by Dr. L. F. Noble showing bench along Colorado River with unidentified men and horses, t...
Photograph by Dr. L. F. Noble is a view up Colorado River from a point 3 miles below Meskin Bar, sho...
Photograph by Dr. L. F. Noble showing a horse and a woman on horseback, White Cliffs of Navajo Sands...
Photograph by Dr. L. F. Noble showing a view looking up Colorado River at the mouth of Rock Creek, 1...
Photograph by Dr. L. F. Noble showing Beds of 'Marine Jurassic' limestone overlying Navajo Sandstone...
Photograph by Dr. L. F. Noble showing contact between Navajo sandstone and Marine Jurassic on upper ...
Photograph by Dr. L. F. Noble showing cars with the Herbert Gregory party in the valley of the Virgi...
Photo shows sandstone (probably Navajo) and overlying beds in canyon about 12 miles east of Utah Col...
Photograph by Dr. L. F. Noble showing Canyon of Paria River in white Navajo sandstone, 1922. Photo f...
Photograph of the Little Colorado River, looking downstream from Grand Falls in 1913. Photo 740 fro...
Photograph from Herbert E. Gregory Book 3: Navajo-Hopi, Arizona-New Mexico, showing Mendenhall, Greg...
Photo shows sandstone (probably Navajo) and overlying beds in canyon about 12 miles east of Utah Col...
Photo of Paria River below White Rock Spring in Kane County, Utah, in 1944. The wall of Navajo sands...
Photo shows a view looking across Colorado River at mouth of White Canyon, San Juan County, Utah, 19...
Photograph by Dr. L. F. Noble showing a view up Colorado River from a point 3 miles east of Cottonwo...
Photograph by Dr. L. F. Noble showing bench along Colorado River with unidentified men and horses, t...
Photograph by Dr. L. F. Noble is a view up Colorado River from a point 3 miles below Meskin Bar, sho...
Photograph by Dr. L. F. Noble showing a horse and a woman on horseback, White Cliffs of Navajo Sands...
Photograph by Dr. L. F. Noble showing a view looking up Colorado River at the mouth of Rock Creek, 1...
Photograph by Dr. L. F. Noble showing Beds of 'Marine Jurassic' limestone overlying Navajo Sandstone...
Photograph by Dr. L. F. Noble showing contact between Navajo sandstone and Marine Jurassic on upper ...
Photograph by Dr. L. F. Noble showing cars with the Herbert Gregory party in the valley of the Virgi...
Photo shows sandstone (probably Navajo) and overlying beds in canyon about 12 miles east of Utah Col...
Photograph by Dr. L. F. Noble showing Canyon of Paria River in white Navajo sandstone, 1922. Photo f...
Photograph of the Little Colorado River, looking downstream from Grand Falls in 1913. Photo 740 fro...
Photograph from Herbert E. Gregory Book 3: Navajo-Hopi, Arizona-New Mexico, showing Mendenhall, Greg...
Photo shows sandstone (probably Navajo) and overlying beds in canyon about 12 miles east of Utah Col...
Photo of Paria River below White Rock Spring in Kane County, Utah, in 1944. The wall of Navajo sands...
Photo shows a view looking across Colorado River at mouth of White Canyon, San Juan County, Utah, 19...