A celebration of the 60th anniversary of Gary Grimshaw’s “Seagull” poster and the Grande Ballroom psychedelic era, featuring The Howling Diablos, Prof. M. L. Liebler and Jeff Grand performing the poetry of John Sinclair, and folk songs by Carl Lundgren. Wednesday, October 7, 2026, at Third Man Records, 441 W. Canfield St., Detroit. Doors open at 6 p.m., with Grimshaw posters and Leni Sinclair photographs available.