I must say that "Tales From The Who", the vinyl bootleg of the original King Biscuit broadcast, is my favorite Who bootleg of all time. While my copy has long since gone to vinyl heaven, I was not surprised that I remembered all the song introductions by heart as I listened to the 12-4 Philadelphia show.  After listening to the 12-6 Largo show, I can say with 99% certainty that the King Biscuit broadcast is ENTIRELY from the Philadelphia show, and the Largo show, while recorded, went completely unused (for fairly obvious reasons - the crowd control issues seemed to have really got the guys off their game, Largo pales in comparison to Philly).  The "Tommy" encores that have been attributed by some souces as being from Largo are obviously not, as "Pinball Wizard" is a complete mess at Largo and Roger's "Let them hear you in New York" comment during See Me Feel Me/Listening to You, as heard in the broadcast, comes from the Philly show.  Other than the tape boxes being misdated for no clear reason ... mystery solved.