Gregory, Herbert E. (Herbert Ernest), 1869-19522024-05-132024-05-131900?-1985https://hdl.handle.net/11124/179087Scale approximately 1:435,000.22 x 28 cmgeological mapsengNo known copyright: http://rightsstatements.org/vocab/NKC/1.0/.Geology -- Utah -- Zion National Park -- MapsStillImage