Hopkins, Jon H., Orozco: A Catalogue of His Graphic Work, Flagstaff, Arizona: Northland Press, 1967

Hopkins, Jon H., Orozco: A Catalogue of His Graphic Work, Flagstaff, Arizona: Northland Press, 1967, Box: 7. John Anderson papers, MSS 0312. University of Delaware Library Special Collections. https://findingaids.lib.udel.edu/repositories/2/archival_objects/87362 Accessed September 16, 2024.