Piston valve engines
name: label: Collection Creator
content: McIntosh, Seymour and Company
setName: label: See more items in
content: McIntosh, Seymour and Company Records
label: See more items in
content: McIntosh, Seymour and Company Records / Series 7: Instructions
unitdate: label: Date
content: 1905 - 1913
container: label: Container
content: Box 63, Folder 7
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials