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Program cover of the 1959 Mattachine Society Convention in Denver. Courtesy of blog post by Nick Ota-Wang, "The Queen City: Denver's Homophile Organizations, 1950-1970," Colorado Voices, HistoryColorado.org. Published 26 June 2020. https://www.historycolorado.org/story/colorado-voices/2020/06/26/queen-city