Stempeltext by Ferdinand Kriwet, 1963. via Paul Prudence (via Tim Koch)
Timm Ulrichs, in «edition et» no. 3, Edited by Bernhard Höke, Verlag Christian Grützmacher, Berlin, 1967. Via garadinervi.
The first close-up photos of Mars were taken with an analogue TV-camera and sent to earth as a grid of numbers. Each number represented a colour so scientists painted by numbers to colourize Mars in 1965. h/t @mwichary