I don't know of any; but this line from one of Bob's little known songs sometimes reminds me of Buk. "Oh, the only decent thing I did when I worked as a postal clerk Was to haul your picture down off the wall near the cage where I used to work. Was I a fool or not to try to protect your identity? You looked a little burned out, my friend, I thought it might be up to me." ....bobdylan.com/moderntimes/songs/uptome.html This song would have been written in the mid-70s...a few years after Post Office had come out.