Photographs
name: label: Collection Creator
content: Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
setName: label: See more items in
content: William J. Hammer Collection
unitdate: label: Date
content: 1880-1925
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
identifier: label: Identifier
content: NMAH.AC.0069, Series 4
objectType: label: Type
content: Archival materials
scopecontent: label: Scope and Contents note
content: The photographs in this series consist of twenty-three boxes of photographs arranged into three groups: Subseries 4.1: Photographs relating to Hammer; Subseries 4.2: Edisonia photographs; and Subseries 4.3: Photographs relating to reference materials. Nine of the twenty-three boxes in Series 4 are oversized.