Oats...this is very interesting stuff! Thanks!
For the past week I've been trying to dig up the version of Rosalita that was first played in Richmond, VA back on 1973-02-14 with no luck, but in searching I keep finding all sorts of other interesting things.
For example, I stumbled across a Steel Mill cover, released by a Canadian band as a single in the 1970s.
For all we know about Bruce, there's lots we don't know. Or at least I don't, and I've been a fan forever!