Once upon a time, there were two books ...
And three films ...
Though pornography started before Gerard Damiano's
Deep Throat became mainstream in the adult theaters. That's when Harry Reems and Linda Lovelace first appeared. Later Marilyn Chambers and Johnnie Keys were both in Artie and Jim Mitchell's
Behind the Green Door (which is probably the first interracial scene
) along with the six women on stage performing
cunnilingus on Marilyn Chambers
. Gerard Damiano back again with Georgina Spelvin along with Harry Reems again in
The Devil and Miss Jones ..
.
They were showing peep show loops (ten to fifteen minute scenes shot over and over like today's .gifs) in those places on 8th and 9th Avenues along 42nd, 43rd and 44th Streets, NYC in Times Square. Pornography loops were invented by a few people. Shaun Costello got credited in the late 1960s for creating many of them for the smut houses (theaters that would show them like the
Grand Pussy Cat Cinema on 49th Street and 7th Avenue and it's sister the
Kitty Cat Cinema also on 49th Street just around the corner)
https://www.themoviedb.org/person/98370-shaun-costello
https://www.xbiz.com/p/shaun-costello?v=2017-09-21