published on: 2019-04-18 12:22:35
grindhousetheater.tumblr.com/post/184263525160/
grindhousetheater.tumblr.com/post/184263527260/
saddbitchh666:
grindhousetheater.tumblr.com/post/184270798905/
pin-upart:
vintagegeekculture: Hewlett Packard’s Fourier Analyzer, 1972.