You're welcome. I want to question that Blondie/Winterland date, though...Dec. 31, 1978 was the last night at Winterland, and the line-up was Grateful Dead/New Riders of the Purple Sage/Blues Brothers, so either the date or the location had to be off. I dropped "Blondie" "Winterland" into Google, and came up with photos of Blondie opening for REO Speedwagon (!) at Winterland in November of 1978...so it's likely that the show was in November.

The unknown Philadelphia station is likely to be WMMR-FM. As you noted, WBCN in Boston also did live shows, too. I know there's a widely bootlegged Tom Petty WBCN show from the Paradise in 1978 - which was later syndicated by Retro Rock (who has the Retro Rock archives, I wonder...)

If, as I speculated, they have access to the KSAN archives, there are other great shows that have yet to be released. There are Record Plant/Sausalito shows for Doug Sahm, Kinky Friedman, Steve Miller, Linda Ronstadt, Warren Zevon, Jerry Garcia, and Bonnie Raitt, and there are also shows out of the Record Plant/L.A. and Record Plant/NYC (the multiple Record Plant locations are a source of a lot of labeling confusion, btw - for example, I've seen the two Fleetwood Mac shows listed as being both from L.A....or both from Sausalito). I believe KSAN had a Neil Young/Old Waldorf from '78 (LATER NOTE:  I now think this was from the Boarding House, not the Old Waldorf)...and Elvis Costello at the same venue. KSAN broadcast only one of Costello's two sets....but I know that they taped both of them. There's a lot of great stuff out there....and KBFH probably has entire shows in their archives that were never broadcast.

(Note to the kind folks at Wolfgang's Vault: the show you have listed as Tom Petty/Hammersmith/3-7-80 is almost certainly 3-6-80. A few of the tracks are identical to the KBFH discs (I compared), but the version of "Cry To Me" is different. On the version that was released to radio, Petty asks "how many of you were here last night?" That's not on your version, and the take is a different recording. The majority of the other tracks are different, too. KBFH combined tracks from 3/6 and 3/7 to produce their radio show...which means that there's an actual 3/7 show somewhere in their archives.