http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1 relief model : color, plastic ; 27 x 44 cm., on sheet 55 x 55 cm.
Relief also shown by shading and spot heights.
Includes two ancillary detail maps (scale [approximately 1:76,000]) of the North and South Rim trail areas.
"Park map based on ERTS satellite photography."