This is the cover of the 1972 March/April issue of Information Display, Vol 9 No 2, from archive.org.
Stories inside include ways to project different-sized letters on a cathode-ray screen, and training fighter pilots with line drawings in a three-dimensional “virtual space.” Like the arcade game BattleZone, if any of you are old enough to remember that.
I can feel myself turning to dust as I type this….