Scope and Contents The maps in Box 34 are those used by Nevills on his river trips. These are U.S. Geological Survey maps of the Green, Colorado, San Juan, Snake, and Salmon Rivers that have been cut into sections to fit into a wooden map holder devised by Nevills for use on the river. The holder is also included in this box. Also included is a homemade scroll map where the sections of maps of the Grand Canyon were pasted onto brown paper to make a continuous scroll. The scroll has many handwritten notes by...