what it is: new york in the 70s
where i found it: i didn't
I was too tiny to ever deal with any of this stuff in person, which is probably a good thing. But I like looking at it now.
Here's a goofy song with a pretty incredible series of photos all dating from 70s NYC. You might want to listen to something else while you watch it.
Here's an aptly named page called Dirty Old 1970s New York City.
And to think that now you can't even smoke a cigarette in a park.