From ArborWiki

The Primo Showbar was a rock and roll dance club at 217 S. Ashley Street from July 6, 1973 - March, 1974. It replaced Mackinac Jack's at that location.

The concert posters for Primo were designed by Gary Grimshaw.

Show list: http://www.motorcitymusicarchives.com/primoshowbar.html

Early Bob Seger shows: http://www.segerfile.com/concerts.html