Ann Arbor Hash Bash 50th Anniversary, April 2, 2022 Year 2022 Month April Day 2 Rights Held By Ann Arbor District Library Copyright Creative Commons (Attribution, Non-Commercial, Share-alike) Ann Arbor Hash Bash 50th Anniversary Photo Subjects Marijuana Hash Bash Recreational Drugs Cannabis Ann Arbor Hash Bash 50th Anniversary Amy Cantu University of Michigan Diag