Mosaics from the Mariner 4 mission to Mars.
Images were processed from the scanned data available here:
http://nssdc.gsfc.nasa.gov/imgcat/html/mission_page/MR_Mariner_4_page1.html.
On the overlapping areas of adjacent
frames color was computed, as the images were obtained using
a Red/Green - Green/Red filter sequence.
It was also possible to match the visible features
to a Mars map and reconstruct the full strip of Mars images,
from limb to terminator.