Have a listen to the concertn on WV - Philly 12/4 (the end chunk after Won't Get Fooled Again). You may well find this is part of or all of what you mention. I think you are refering to the Largo gig - 12/6
If not - I'll do some more digging for you.
*update* - I'm totally confused now, I just checked the 12/6 show on WV and that has Pinball Wizard and See Me Feel Me on it too! The notes I have from "Baba O'Riley's Bootleg Page" say the last two tracks of 12/4 Philly were infact from 12/6 Largo.
I did notice Roger changed the lyrics on Pinball Wizzard (Philly) to "I aint seen anything like him in any COMMUNION HALL" (instead of amusemtn hall). Maybe this is a clue to where they were if The Spectrum or the Capitol Center is known as a communion hall. Or maybe it's just a English to American-English conversion he did because he felt Americans wouldn't understand 'amusment hall'.
My head hurts, has anybody asked Pete?