Articles on Pioneer Edison Cos.
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 2: Edisonia / 2.11: Early Companies; Material Regarding Legal Proceedings; Misc. Script; 1898 Map of Borough of Brooklyn
unitdate: label: Date
content: 1891-1922
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials