Music is Art has 13 tracks from the June 4th Radiohead show in Boston.
Bradley's Almanac has the entire June 5th show from Boston.
Kwaya Na Kisser has a complete set of Radiohead demos from the summer of 1990. (Not only did I not have most of these, I also didn't know that the band was, for a time, called "Shindig." Yikes. How history could have been different. Kind of like if R.E.M. had gone with their runner-up choice... "Negro Eyes.")