Here in New Jersey, we have a GREAT new station for about a year now, WMTR 1170 and 1250AM, which plays 50's and early 60's exclusively. They even have a Doo Wop program on at 7-10 Friday nights.
WCBS FM, a New York station USED TO play this music, but have moved to a 60's, 70's, 80's format(mostly 70's). It's OK, but not what it used to be. I guess they are going for a broader audience.
Unfortunately, WMTR has a limited signal, but it is my station of choice.
For those of you in northern NJ, please support them, or they will go away too. :(