* Speed, Geo., Testimony before United States Commission on Industrial Relations, San Francisco, August 27, 1914, in Industrial Relations, Hearings, vol. 5: 4936-49.
Spielman, Jean E., The Tramp as a Home Guard, New Castle, Pa.: I. W. W. Publicity Bureau, I. W. W. leaflet, n. d.
* Steiger, J. H., The Memoirs of a Silk Striker; an Exposure of the Principles and Tactics of the I. W. W. (Paterson, N. J.?), privately printed, 1914.
* Thompson, Jas. P., Testimony before United States Commission on Industrial Relations, Seattle, Wash., August 10-12, 1914—in Industrial Relations, vol. v, pp. 4233-42.
* Trautmann, Wm. E., Direct Action and Sabotage, Pittsburgh; Socialist News Company, 1912, 43 pp., illustrated, 10 cents.
----, Industrial union methods, Chicago, C. H. Kerr [1912], 29 pp.
----, Industrial Unionism, Chicago: C. H. Kerr & Co., 1909, pamphlet, 29 pp., 5 cents. Same as "Industrial Union Methods."
----, Industrial Unionism: The Hope of the Workers, Pittsburgh: Socialist News Co., 1912, pamphlet.
----, Vom Niederlagen zum Sieg, Chicago: I. W. W., 1911, pamphlet, 5 cents.
----, Why Strikes are Lost: How to Win, 23 pp., Newcastle, Pa.: Solidarity Literature Bureau, n. d.