Thanks for the link - it looks like they updated the site since I last looked there. Both the Wilco and Smashing Pumpkins used to be in a gallery of sold-out posters. They have the Wilco one posted for sale now, so I emailed them to reserve it and asked about the Smashing Pumpkins one. Thanks for the help.
Good luck on the Lupo's Pumpkin's poster. For all intent and purposes, that was a private show (unadvertised despite the evidence of this gig poster) 7 years ago & an edition of about 80, most of which went to friends of the band.