Guide to Yosemite High Sierra trails [cover title]. [Yosemite National Park, California]: Published by the Yosemite Natural History Association, 1981. Single sheet, 45.6x60 cm, folded to make 24 panels. 16 illustrations, 19 trail profiles, 1 map. Guide to some of the principal trails in central Yosemite National Park, including the High Sierra Loop Trail. Verso is a large scale map of the region showing the described trails. The text was written by Bob Roney. A nearly fine copy. (#138966).