Title: Der Hammer, Workers' Monthly. Issue No. 4 (6-10) 1926; No.6 (10) 1927; No.7 1933; No.1 (4, 5, 7-9, 12) 1934
Artist Display Name: Freiheit Publishing Asa’n|William Gropper|Hammer Publishing Company|Joseph Moissaye Olgin
Artist Display Bio:  |American, New York 1897–1977 Manhasset, New York| |1878–1939
Artist Alpha Sort: Freiheit Publishing Asa’n|Gropper, William|Hammer Publishing Company|Moissaye Olgin, Joseph
Artist Wikidata URL: |https://www.wikidata.org/wiki/Q972080||
Medium: Sixteen issues; first edition
Credit Line: The Elisha Whittelsey Collection, The Elisha Whittelsey Fund, 2023