Photo-engraving on Metal
date: label: Date made
content: March 26, 1872
name: label: maker
content: McGill, W. A.
label: maker
content: Pine, R. H.
setName: label: See more items in
content: Work and Industry: Photographic History
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PG.000866
objectType: label: Object Name
content: Patent Model, Photo-engraving on Metal