United States, Colorado, Denver County, Denver, 39.73915, -104.9847Chase Photo, Ltd.1968-09image/jp2Georgia State University Libraryhttp://rightsstatements.org/vocab/InC-EDU/1.0/SERIES IV: Coal and AppalachiaM. H. Ross PapersSouthern Labor Archiveshttps://archivesspace.library.gsu.edu/repositories/2/resources/1Coal minersCoal miners--Labor unionsConstitutional conventionsUnited Mine Workers of AmericaWilliam Boyle at United Mine Workers of America 45th Constitutional Convention, 1968-09StillImage