* Varney, Harold L., "Butte in the hands of the I. W. W.," One Big Union Monthly, March, 1919, pp. 36-37.
----, "The story of the I. W. W.," One Big Union Monthly, March, 1919, and subsequent issues.
A detailed history of the organization by a member, running serially in the O. B. U. Monthly beginning with the issue of March, 1919.
"What's wrong with labor? Federation threatened with I. W. W. control from the inside," New York Times, October 26, 1919, sec. 4, pp. 1-2, 12.
"What the I. W. W. black cat and wooden shoe emblems mean." Literary Digest, vol. 61, pp. 70-75 (April 19, 1919).
1919 * Woodruff, Abner E., The evolution of American agriculture. With an introduction by Wm. D. Haywood. Chicago: Agricultural Workers Industrial Union No. 400: 1919, 77 pp., illus.
1920 * Doran, J. T. (of the I. W. W.), "Murder in Centralia," The Liberator, February, 1920, pp. 16-18.
Hard, William, "William Z. Foster," The New Republic, January 7, 1920, pp. 163-166.
Spargo, John, "Why the I. W. W. flourishes," World's Work, January, 1920, pp. 243-247.