Sound samples from payphones, including a brass band as heard through a payphone call, and a variety of messages announcing that calls to toll-free numbers are not allowed from payphones.
Recalling Calling “Recalling 1993”

"Recalling 1993" is a payphone-based art project produced by the Droga5 ad agency and the New Museum. I put the project through its paces, calling in from dozens of Manhattan payphones and listening to recorded programs in which selected notables described New York City as it was in 1993. Read (and listen).

The American Public Communications Council says that 750 million calls are made from payphones every year. 27 million payphone calls were made from New York City in 2011. Here is a picture of one call made from a curbside payphone in April, 2013.
Another Abandoned PTS Payphone

Most of New York City's subway stations are littered with useless hulks of payphones abandoned by Pacific Telemanagement Services (PTS). Since PTS acquired most of Verizon's payphones devices like this one at the 53rd Street/Lexington Avenue stop have been left to rot. It is virtually impossible to find a working payphone in most of New York City's subways.
Abandoned Phone Box: Aldershot, Hampshire, England

This phone box was obviously put in place back when the surrounding houses were built back in the 1930's to service the residents. Being on a quiet road it is not surprising that BT decided to withdraw service over a year ago. But the phone box is still there with a dead telephone inside it! It's a home for spiders now.

I spotted this poem stuck under the handset of a midtown Manhattan payphone. I did what I sometimes do. I picked up the phone and called it in.
E.H.U.C.: The Fine Print

East Harlem Unity Communications (EHUC) is the best payphone service provider in New York City. I use payphones almost every day and can say with confidence that East Harlem's street phones are the best in town.
Telebeam: The Fine Print

Even the most intrepid payphone user is unlikely to read the fine print found on most public telephones. The text matter is teeny-tiny and frequently obscured by filth. I transcribed the text found on this Telebeam payphone in midtown Manhattan.
Tennessee State Payphone Locator, 2009 Data

Tennessee's 2009 "Request For Proposals for Payphone Service" included a gem that passed me by: A list of all known Tennessee State-managed payphones locations with phone numbers and revenues for the previous year.