Chicago: Charles H. Kerr & Company, [circa 1910 - 1914]]. Pamphlet. 26, [viii]p., wraps lacking original red cellophane outer wraps, penciling on front wrap by an attentive comrade along with internal pencil marginalia &underling, 3.5x5.75 inches. Date based on Kerr's address. Pocket library of socialism, no. 50.