From a 1975 book called Happenting on Travel On, written by Carole Spearin McCauley. Features computer generated text, text graphics, source code, etc. via James Ryan
LetraTime, a German magazine from 1975. This cover won ITC’s first Upper and Lower Case International Typographics Competition.
More info. h/t: Tim Koch
Foucault by Kohei Sugiura from Koichi Toyosaki, Suna no Kao (Face on the Sand), Ozawa Shoten, 1975. h/t: Takashi Kawano