patent model, Johnson and Whittemore telegraph signal box, US #210258
date: label: Date made
content: 1878
name: label: maker
content: Johnson, John B.
label: maker
content: Whittemore, Harrison
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.308891
label: catalog number
content: 308891
label: accession number
content: 89797
label: patent number
content: 210258
objectType: label: Object Name
content: Telegraph Signal Box for Electric Registers
label: Object Name
content: telegraph signal box
physicalDescription: label: Measurements
content: overall: 12 in x 12 in; x 30.48 cm x 30.48 cm