EARLY MARS CHART.
National Aeronautics and Space Administration Mars Chart. U.S. Army Topographic Command for NASA. First edition, August 1970. 29 x 36 inches. Scale 1:25,000,000.
The equatorial and polar regions are illustrated based mainly on Earth telescopic observations with all major Martian regions identified. Photographic telemetered images from the 1969 Mariner 6 and 7 close encounter fly-bys are printed in an overlay type format. Those imaged areas are mainly at the equatorial to the south polar region. Other areas of this chart were complied from Mariner 4 image data obtained in 1965 and the far encounter images from both Mariners 6 and 7. The large bottom border area contains general physical data for Mars, a photographic coverage grid, and other chart technical information.