The History of an Art, Historical Collections of Incandescent Electric Lamps, William H. Hammer, New York
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
label: See more items in
content: William J. Hammer Collection / Series 4: Photographs / 4.3: Reference Materials / Hammer apparatus
physdesc: label: Extent
content: 1 Photograph (19 3/4' x 26 5/8")
unitdate: label: Date
content: [1910?]
container: label: Container
content: Map-folder 3
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Photographs