I got side-tracked and haven't responded back... gotta be an age thing ;D
Several years ago, Bob Abbott was kind enough to loan me the jingle packages he had, but did not have the WLLL package from the 70s. I actually copied the WLVA jingle package in the mid-80s, but WLVA had relocated with some massive prod board that I was not familiar with. When I got home and listened, the entire bottom end was missing. I bulked the tape with the hope that I would get another dub. The PD (allegedly) left town with some of the equipment and I never got another opportunity.
The WLVA jingles were JAM - I have the demo with the WABC jingles. Bob told me what the WLLL jingles were, but I forget (that age thing again). I think they were PAMS. I have some really bad quality airchecks with various jingles, but I'm still hoping to find someone who has a clean copy. I'd love to hear the airchecks mentioned by the previous posters!