USGS IMAP 935: Geologic map of the Elysium Quadrangle of Mars
By Planetary Geologic Mapping
1976 (approx.)

Detailed Description
USGS IMAP 935: Geologic map of the Elysium Quadrangle of Mars
By D. H. Scott and J. W. Allingham
Map and associated documents available from the USGS Publications Warehouse: https://doi.org/10.3133/i935
Sources/Usage
Public Domain.