Arizona.
Geological Survey (U.S.)
cartographic
Topographic maps. lcgft
[S.l.],
1891-
eng
Edition statement varies on some sheets.
Arizona--Maps.
United States
United States Grand Canyon Region.
Available also through the Library of Congress web site as a raster image.
http://hdl.loc.gov/loc.gmd/g4330m.gnp00006