WNBC

660 AM WNBC was on the air in New York, New York from 1946 to 1954 and again from1960 until 1988.  They were known as WEAF after going on the air as the first commercially licensed station in the city in 1922 and they also carried the WRCA call letters in the 1950s.  I think most of these decals were from the 1980s when WNBC was a Top-40 station which later turned into an Adult Contemporary format.  Howard Stern famously spent about three years at "W-ehhNNN-B-C" from 1982 until '85.  660 AM is now all-Sports WFAN.