This great Times Square period piece--and tour of the Village Bookstore on Christopher Street--is part of a 1972 "documentary" entitled Pornography in New York that I turned up on a torrent site.
[Clip not work safe] [or Youtube safe apparently. Crap and I didn't keep my edit...]
Back in the day you needed to frame your smut with cautionary or educational warning to get past the obscenity laws...which I guess is what I'm doing here.
Anyway it's worth tracking down the full 65 minute doc, which features early footage of Cynthia Plaster Caster (I think, or at least someone following in her--ahem--footprints), a tour of the original Pleasure Chest (when it just had bondage gear tacked to wooden shingles), a body-painting studio, and some innocent interviews with Times Square denizens about their sex-lives and attitudes towards pornography.