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This photograph shows the north end of the Gulf of California at the mouth of the Colorado River as it was seen from the Gemini-4 spacecraft during orbital flight June 3-7, 1965. This picture was part of the Synoptic Terrain Photography experiments conducted during the flight to obtain high quality photographs of large land areas already mapped by aerial photography. In charge of these experiments was Dr. Paul D. Lowman Jr., NASA geologist from Goddard Space Flight Center, Greenbelt, Md. This picture was taken with a modified 70mm Hasselblad camera using Eastman color film, ASA 64 at a lens setting of 250th of a second at f/11.