This one...

http://www.roysac.com/asciinudes/default.html#Joan

...is the all time classic. Every time I logged onto a new mainframe/DEC-VAX system, it'd be sitting in a folder somewhere.

I even had a personal copy printed out on several sheets of paper[1] that has now alas, been lost to time.

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[1] https://en.wikipedia.org/wiki/Continuous_stationery

Are you sure that’s ASCII? I would think these started life as EBCDIC (https://en.wikipedia.org/wiki/EBCDIC) or Multinational Character Set (https://en.wikipedia.org/wiki/Multinational_Character_Set)

Yeah. I remember displaying these on ASCII terminals in 1200 bps connected to a DEC Vax 4000 or a Sun 3.

Digital porn was around even before graphics were common.

Same thing with movies, there's an ASCII art animated star wars somewhere, too.