^John Brown and His Followers in Iowa Midland Monthly Magazine (1894) Vol. 1, pp. 262-267.
^Jones, Louis Thomas (1914). The Quakers of Iowa. Iowa City: The State Historical Society of Iowa. p. 193. "A little over a year after his first visit to the Springdale neighborhood, Brown reappeared late in December, 1857—this time with some ten companions and for purposes which he seemed not anxious to have known. The men were lodged with a Quaker, William Maxon [or Maxson], about three miles northeast of the village of Springdale, with Brown agreeing to give in exchange for their keep such of his teams or wagons as might seem just and fair. Brown himself was taken into the home of John H. Painter, about a half-mile away; and all were welcomed with that unfeigned hospitality for which the Friends have always been known. Not many days passed by until suspicions were aroused concerning this group of men; for the word was spread that strange maneuvers, much like military drill, were daily being conducted on the lawn at the Maxon [or Maxson] home." "The men brought by Brown to Springdale on this occasion were his own son, Owen Brown, Aaron D. Stevens, John Kagi, John E. Cook, Richard Realf, Charles W. Moffitt, Luke J. Parsons, Charles H. Tidd, William Leeman, and Richard Richardson, a colored man. See Lloyd’s John Brown Among the Pedee Quakers in Annals of Iowa, Vol. IV, p. 712."
^Lord, Jeanette Mather, "John Brown: They Had a Concern," West Virginia DIvision of Culture and History Vol. 20, No. 3 (April 1959), pp 163-183
^Both Coppock photos from A topical history of Cedar County, Iowa, Volume 1 (1910) Clarence Ray Aurner, S.J. Clarke Publishing Company