Just remembered -- I spent a summer about 20 years back commuting from Nantucket Island to our base at BOS. Went out onto the apron to board the commuter & there were two or three DC-3s parked there in PBA (Provincetown & Boston Airline), one with the door open & airstair down. "How nice," I thought, "a vintage a/c open day." Made a mental note to have a look myself if I got the chance.
Then the ground crew shepherded us onto said DC-3. It was the standard equipment for the BOS - HYA - ACK - MVY run. Lovely old things (PBA had four, I think, which meant the required two were airworthy at any given time), great to ride, even as SLF, in the old gal not tarted up as some kind of "heritage" trip with CC in retro uniforms etc, but just as an ordinary, shabby, well-maintained working aeroplane. Some nice pix of the PBA '3s:
here
I don't know what happened to them in the end. Went down to Florida, I heard. But nice to see them doing the job for which they were designed, working the line.