Topographic map, Bryce Canyon National Park, Utah / United States Department of the Interior, Geological Survey ; H.H. Hodgeson, Division Engineer ; topography by R.T. Evans and from aerial photographs by stereophotogrammetry
Scale 1:31,680 ; polyconic projection (W 112°18ʹ30ʺ--W 112°03ʹ00ʺ/N 37°43ʹ00ʺ--N 37°25ʹ00ʺ).
Note
"Surveyed in 1931-32." Relief shown by contours and spot heights. Contour interval 50 ft. Text and illustration on verso: Bryce Canyon National Park / by Herbert E. Gregory. Maps Library copy without text on verso.