Holyoke Water Power Company, bottom plate test 47 1/2" R. H. Leffel sparks turbine
name: label: Collection Creator
content: James Leffel and Company
setName: label: See more items in
content: James Leffel and Company Records
label: See more items in
content: James Leffel and Company Records / Series 3: Testing Data
unitdate: label: Date
content: 1916
container: label: Container
content: Box 13, Folder 1
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials