Cite

Harris, Teenie, 1908-1998. "Two men protesting beer companies, possibly including Bill Robinson wearing sign "Duquesne is back and we've got it," "The non-buying campaign against Duquesne is over" and Tommy Butler wearing sign "We do not sell Iron City Beer here because..."." Carnegie Museum of Art. 1969, http://www.cmoa.org/CollectionDetail.aspx?item=12508.

Harris, Teenie, 1908-1998 (1969). Two men protesting beer companies, possibly including Bill Robinson wearing sign "Duquesne is back and we've got it," "The non-buying campaign against Duquesne is over" and Tommy Butler wearing sign "We do not sell Iron City Beer here because...". Retrieved from http://www.cmoa.org/CollectionDetail.aspx?item=12508

Harris, Teenie, 1908-1998. "Two men protesting beer companies, possibly including Bill Robinson wearing sign "Duquesne is back and we've got it," "The non-buying campaign against Duquesne is over" and Tommy Butler wearing sign "We do not sell Iron City Beer here because..."." 1969. June 21, 2025. http://www.cmoa.org/CollectionDetail.aspx?item=12508.