May Day Added by Unknown 1685 on Apr 26th, 2021 Date 1973 Credits Unknown 69 Format Poster 1531 Type of Work Finished work 5261 Bogdan Benev, Bulgarian#MayDayposter, 1973.Bogdan Benev, Bulgarian#MayDayposter, 1973.Bogdan Benev, Bulgarian#MayDayposter, 1973. Tags colorBulgarianMay DaySocialismworkers Source: twitter.com