Origins Of May Day ID: 272 | This file appears in: May Day Riot To listen to this audio please consider upgrading to a web browser that supports HTML5 audio David Goldberg of Cleveland State University explains the origins of May Day | Source: Cleveland Regional Oral History Collection Download Original File SourceCleveland Regional Oral History CollectionRelation“David Goldberg interview, 01 August 2008,” Cleveland Voices, clevelandvoices.org/items/show/2830 "Origins Of May Day" appears in: May Day Riot