Deadlists does confirm those songs you mention in your post. Phil Lesh adds that "In the Midnight Hour", on his "Fallout from the Philzone" cd, could have come from this date, too. From Deadlists.com you can follow a link to archive.org where there are recordings for streaming and with comments. downloadable torrents may be up on eTree and/or Losslesslegs. Gosh, wish I could've been in the ballroom with the 25 other folks that night.

In The Midnight Hour ; Dancing In The Streets ; It Hurts Me Too ; Cold Rain And Snow ; Good Morning Little Schoolgirl# ; #Viola Lee Blues > Big Boss Man (1) ; Alligator (2)
Comments Phil Lesh: "We were once accused of playing this song for 45 minutes - this version isn't quite that long, but it's the longest I could find. This was recorded at a Russian River resort ballroom on Sunday night of Labor Day Weekend - I don't think there were more than 25 people there, but we played our little hearts out for them anyway. Pig does his patented "Git your hands outta yo' pockets - git on up an' dance" rave, and the band keeps endlessly inventing new stuff behind him. We had to master this one in mono, because it was recorded with vocal mikes on one track and the whole band on the other." Quoted from 'Fallout From the Phil Zone'.

(1) introduced as "an old song"
(2) no "Caution" yet, it simply returns to the shouted "Alligator" refrain & then ends