“Police Raid Hotel Room of J.F. Brock: Laundry Worker Official and Wife are Treated Disgracefully” Oregon Labor Press. “Police Raid the Hotel Room of J. F. Brock.” October 25, 1919. Oregon Historical Society Research Library.
Oregon Labor Press. “Police Raid the Hotel Room of J. F. Brock.” October 25, 1919. Oregon Historical Society Research Library.