1 : Photo of Lees Ferry and the Colorado River at the start of Aaron Belnap Ross's river trip through the Grand Canyon in May of 1966.
2 : Photo of Lees Ferry and the Colorado River at the start of Aaron Belnap Ross's river trip through the Grand Canyon in May of 1966.
3 : Photo of a scene in Marble Canyon near the site of a proposed dam, Arizona, visited by Aaron B. Ross on a Colorado River trip in May of 1966
4 : Photo of a scene in Marble Canyon near the site of a proposed dam, Arizona, visited by Aaron B. Ross on a Colorado River trip in May of 1966
5 : Photo of a scene in Marble Canyon at the site of a proposed dam, Arizona, visited by Aaron B. Ross on a Colorado River trip in May of 1966
6 : Photo of a scene in Marble Canyon near the site of a proposed dam, Arizona, visited by Aaron B. Ross on a Colorado River trip in May of 1966
7 : Photo of a scene along the Colorado River in Marble Canyon, Arizona, visited by Aaron B. Ross on a Colorado River trip in June of 1972
8 : Photo of a desert plant seen during Aaron Belnap Ross's river trip through the Grand Canyon in May of 1966.
9 : Photo of the grave of a Boy Scout who died in 1956 near President Harding Rapid along the Colorado River in the Grand Canyon, visited during the Aaron Belnap Ross river trip in May of 1966.
10 : Photo of a man at the grave of Peter Hansborough, who drowned in 1889 during an exploration survey. The site is near President Harding Rapid on the Colorado River, and was visited during the Aaron Belnap Ross river trip through the Grand Canyon in the spring of 1966.
11 : Photo of an inscription marking the grave of Peter Hansborough, who drowned in 1889 during an exploration survey. The site is near President Harding Rapid on the Colorado River, and was visited during the Aaron Belnap Ross river trip through the Grand Canyon in the spring of 1966.
12 : Photo of the grave of a Boy Scout who died in 1956 near President Harding Rapid along the Colorado River, visited during the Aaron Belnap Ross river trip in May of 1966.
13 : Photo of a scene along the Colorado River in Marble Canyon, Arizona, visited by Aaron B. Ross on a Colorado River trip in May of 1966
14 : Photo of a scene along the Colorado River, just below the confluence with the Little Colorado, during the Aaron Belnap Ross river trip through the Grand Canyon in the spring of 1966.
15 : Photo of a scene along the Colorado River during the Aaron Belnap Ross river trip through the Grand Canyon in May of 1966.
16 : Photo of a scene along the Colorado River in the Grand Canyon, during the Aaron Belnap Ross river trip in May of 1966.
17 : Photo of a scene along the Colorado River during the Aaron Belnap Ross river trip through the Grand Canyon in the spring of 1966.
18 : Photo of basalt cliffs above the Colorado River seen during Aaron Belnap Ross's river trip through the Grand Canyon in May of 1966.
19 : Photo of a scene along the Colorado River during the Aaron Belnap Ross river trip in May of 1966.
20 : Photo of a scene along the Colorado River with an ancient fault revealed by an unconformity in the stratigraphy. Seen during the Aaron Belnap Ross river trip through the Grand Canyon in May of 1966.
21 : Photo of blooming brittle bush (Encelia farinosa), seen near the Colorado River. Seen during the Aaron Belnap Ross river trip in May of 1965.
22 : Photo of a mesquite bush growing along the Colorado River during the Aaron Belnap Ross river trip in the spring of 1966.
23 : Photo of a boat in Hance Rapid along the Colorado River near the upper end of the Grand Canyon, during the Aaron Belnap Ross river trip in May of 1966.
24 : Photo of a boat in Hance Rapid along the Colorado River near the upper end of the Grand Canyon, during the Aaron Belnap Ross river trip in May of 1966.
25 : Photo of a boat in Hance Rapid along the Colorado River near the upper end of the Grand Canyon, during the Aaron Belnap Ross river trip in May of 1966.
26 : Photo of a boat in Hance Rapid along the Colorado River near the upper end of the Grand Canyon, during the Aaron Belnap Ross river trip in May of 1966.
27 : Photo of a man watching a boat go through Hance Rapid along the Colorado River near the upper end of the Grand Canyon, during the Aaron Belnap Ross river trip in May of 1966.
28 : Photo of Granite Falls Rapid on the Colorado River during Aaron Belnap Ross's river trip through the Grand Canyon in May of 1966.
29 : Photo of a boat running Granite Falls Rapid on the Colorado River during Aaron Belnap Ross's river trip through the Grand Canyon in May of 1966.
30 : Photo of a boat in Granite Rapid along the Colorado River in the Grand Canyon, during the Aaron Belnap Ross river trip in May of 1966.
31 : Photo of Granite Falls Rapid on the Colorado River during Aaron Belnap Ross's river trip through the Grand Canyon in May of 1966.
32 : Photo of raft and passengers on a beach just above Elves Chasm during Aaron Belnap Ross's river trip through the Grand Canyon in May of 1966.
