Greenhouse, Steven (27 de agosto de 2011). «Examining a Labor Hero's Death». The New York Times(en inglés). p. A10. ProQuest885453470. «His [William Adler's] research is just incredible -- it expands what we know in really dramatic ways," said John R. Sillito, co-author of a new book on radicalism in Utah and a retired archivist at Weber State University in Ogden. "It builds a strong case that Wilson should have been the prime suspect.»
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Greenhouse, Steven (27 de agosto de 2011). «Examining a Labor Hero's Death». The New York Times(en inglés). p. A10. ProQuest885453470. «His [William Adler's] research is just incredible -- it expands what we know in really dramatic ways," said John R. Sillito, co-author of a new book on radicalism in Utah and a retired archivist at Weber State University in Ogden. "It builds a strong case that Wilson should have been the prime suspect.»
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«Joehill.org». Joehill.org. 19 de noviembre de 1915. Archivado desde el original el 3 de julio de 2013. Consultado el 14 de julio de 2013.
