The Museum of the City of New York is digitizing its entire collection of photographs and is in the process of putting them all online. Base categories are by photographer, era, and borough. All of them are tagged and you can search for almost anything. I just did searches for Automats and the Bowery and Little Italy and Park Avenue and nightclubs. There are still some search result issues -- for example, I can't seem to see photos of Harlem ONLY from the 1930s -- but they're still working on the archive, so a filter of some sort might be implemented later. In the meantime, internet forever!
At first I was super excited thinking that the NYPL was having an exhibition on Automat memorabilia, but aw, it's only an article. But a great article nontheless, with links, book recs, and a video featuring a swell rendition of "Take the A Train." At the end it references a short-lived Automat-type shop called BAMN, which opened on St. Mark's Place in the Village. I peeked inside once...but I wasn't going to pay $2 for a pair of tiny corn dogs.
But I've passed the new Chock Full o'Nuts coffee shop and diner mentioned in the article, and it looks straight out of the 1950s. Reviews for the most part are pretty positive, so I'll have to pop in some day soon and have a cup and a bite to eat.