Printing The Moon, Lunar Orbiter Image Recovery Project
"As clever as we thought we were, we were not the first team to tackle the issue of generating high resolution imagery. Someone tried to do much of what we were doing today - but did so with technology available in the 1960s. We were recently contacted by someone who had seen our project's Facebook page. His name is Joe Watson and he worked on a project that used computer printers that worked like giant electric typewriters - but using varying sizes of squares instead of letters. With this system and a lot of creativity, Watson and his team created immense high resolution versions of Lunar Orbiter images from which topographic maps were made."