The little that is known about Adam Holzwarth is drawn from the material in this collection. Holzwarth apparently was an early 20th century anarchist who lived in Oregon (Hillsboro and Portland). He had a brother, Charles, and a wife, Mary (who appears in the collection both as Mary Holzwarth and Mary Trautner). He and his wife were active supporters of Emma Goldman and Margaret Sanger, and they kept in touch with others of similar political beliefs.
From the description of Adam Holzwarth Anarchist Collection, [ca. 1909-1929] (University of California, Santa Barbara). WorldCat record id: 61493080