There is a lot that remains obscure, and much that probably forever will, about the various ladies who joined Garcia onstage as Jerry Garcia Band backing vocalists. The Jerry Site's band lineups page has the best information available, of course, but even there I know there are missing names, problematic dates, etc. etc. The 1981-1985 or so period is especially rife with incomplete or problematic information. (Probably true of drummers as well, but that's a whole other can o' worms!)
I don't have time to tackle the whole issue right now, but it's another very long and involved topic about which there will be much to say. Right now, I just want to ask about the late 1983 east coast tour of the JGB. Jaclyn LaBranch appears to have arrived on 10/24/82 and stayed through the end in 1995. According to TJS, it then went like this
|DeeDee Dickerson||backing vocals||Oct 24, 1982||Jun 5, 1983|
|Gloria Jones||backing vocals||Jul 20, 1983||Aug 28, 1984|
|DeeDee Dickerson||backing vocals||Sep 15, 1984||Sep 28, 1985|
|Gloria Jones||backing vocals||Feb 21, 1986||Apr 23, 1995|
By this reckoning, Gloria Jones was the backup singer in late '83.
In an unbelievably erudite analysis of the JGB from 1987 (1), Corry tells us that Gloria replaced Dee Dee on 9/30/83, not 7/20. A detail to be figured out, but still consistent with Gloria being onstage in November-December '83.
I just got thrown off by the ad below for the 11/27/83 show at Constitution Hall in Washington, DC:
DeeDee Dickerson is listed as the second female vocalist. Of course the simplest explanation is that John Scher's outfit had the lineup that had come through in May/June of that same year (on a very, very hot tour, BTW!), which would have included DeeDee and not Gloria.
update: as I said at the top of the post, this has now been explained: DeeDee Dickerson was "on the bus with the Garcia Band" for the November-December 1983 eastern tour. This, of course, modifies understandings of Gloria: is it possible she didn't come in until 1984?
(1) Arnold, Corry. 1987. The Jerry Garcia Band: 11 years and still rockin’. Golden Road no. 13 (Winter): 22-26.