The WKBK QSL card and bumper sticker received in 1974.
WKBW on 1520 kHz made it through to Pinelands at 0515 UTC on the 22nd July 1974 via the Siera valve receiver and 20 metre longwire antenna.
I was fortunate to receive WCKY's QSL card and bumper sticker from Chief Engineer Leroy Fiedler on the 4th October 1974 (A duration of 74 days after posting my reception report).
WKBW TRIBUTE WEBSITE
Check out http://wkbwradio.com/page2.htm for a fascinating tribute to the station.