Petersen Publishing Company

Sources

• Hall-Hoag Collection of Dissenting and Extremist Printed Propaganda
• VIAF: 150704263
• LCNAF: LC|n 78095558
• Wikipedia: http://en.wikipedia.org/wiki/Robert_E._Petersen
• Web: http://www.petersonspublishing.com/
• DbPedia: http://dbpedia.org/page/Robert_E._Petersen