Pratt control schematic diagram (for US 1,048,999 and 1,049,000)
name: label: Collection Creator
content: Pratt, Charles Richardson, 1860-1935
setName: label: See more items in
content: Charles Richardson Pratt Papers
label: See more items in
content: Charles Richardson Pratt Papers / Series 8: Drawings
physdesc: label: Extent
content: 6 Blueprints
unitdate: label: Date
content: 1923 - 1923
label: Date
content: 1914
container: label: Container
content: Map-folder 7
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Blueprints