A gallery of images by photographer Allan Tannenbaum documenting New York nightlife in the seventies. Many of these were featured in a 2003 book.
From the editorial summary: "The city was bursting with creative activity and things were happening all over. The Arab Oil Embargo was affecting the economy, and the Vietnam War was eroding respect for government." Huh. Wonder what that's like.
Shown here: Rules at the entrance to the orgy room at Plato Retreat's swing club. Link to gallery, contains sexually explicit images (via Fleshbot, where there's more background on where to buy the book: Link)