Peterson, Arnold, 1885- Daniel De Leon : social architect / [by] Arnold Peterson - New York, NY : New York Labor News Co., 1941-53. - 2 volumes (400 pages, 313 pages) : illustrations, portraits, and facsimiles ; 23 cm. LCCN: 41022987 Subjects--Personal Names: De Leon, Daniel, 1852-1914. LC Class. No.: HX 84 .D5 / P38 1941