7. Knowles Single Horizontal Plunger
name: label: Collection Creator
content: Holly Manufacturing Company
label: Collection Creator
content: Worthington Corporation
setName: label: See more items in
content: Worthington Corporation Records
label: See more items in
content: Worthington Corporation Records / Series 4: Photographs
unitdate: label: Date
content: 1914
container: label: Container
content: Box 28, Folder 16
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials