[Four early light bulbs : black & white photoprint.]
odd: label: Local Numbers
content: AC0069-0000001 (AC scan number)
name: label: Collector
content: Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
label: Collection Creator
content: Hammer, William J. (William Joseph), 1858-1934 (electrical engineer)
topic: label: Topic
content: Light bulbs
label: Topic
content: Incandescent lamps
label: Topic
content: Electric lighting
creator: label: Collector
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 / Lamp bulbs, bulbs, sockets
physdesc: label: Extent
content: 1 Item (Silver gelatin on paper, 4.0" x 7.1")
unitdate: label: Date
content: 1904
container: label: Container
content: Box 79, Folder 1
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Photographs
genre_format: label: Genre/Form
content: Photographs -- 1900-1910