Albedo maps and map with nomenclature
Based on Earth based observations 1941-58 and Mariner VI and VII oobservations.
Cartographer: James Roth under the direction of Gerard de Vaucouleurs, University of Texas, Austin, TX.
Printed by JPL 1971 for the Mariner Mars 1971 Project.
Map provided courtesy of the USGS Flagstaff Library.