Location map for the Mariner 4 Mars images
NASA Mars missions before 1996
A base map shows the locations of all of Mariner 4's images of Mars, shot on July 14-15, 1965. Your eyes are not deceiving you: the base map on which the footprints are drawn has canals on it. This was, indeed, the map used by NASA to plan the encounter.
Original image data dated on or about July 14, 1965