This document consists primarily of digitized photographs and other items illustrating such subjects as Norm Nevills, who began leading white water river expeditions down the San Juan river in 1936; Marble Canyon Lodge; Navajo Bridge; members of the Greene family, including Art Greene and Vern Baker; the launch of the airboat Tseh Na-ni-ah-go Atin' I at Lee's Ferry; Upper Bridge Canyon (now underwater); Sentinel Rock; Rainbow Bridge; and Cliff Dwellers Lodge. Also included is a discussion of Art Greene's early career as a river guide, including his initial work on the Colorado River, and the Greene family's establishment of Cliff Dwellers Lodge.