pp. 375-402 of typed material
name: label: Collection Creator
content: Watkins, J. Elfreth (John Elfreth), 1852-1903
label: Collection Creator
content: Stevens, John, 1749-1838
setName: label: See more items in
content: John Stevens Collection
unitdate: label: Date
content: circa 1826-1829
container: label: Container
content: Box 1, Folder 7
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
scopecontent: label: Scope and Contents
content: John Stevens' technical descriptions of steam pipes, boilers and other components of steam engines.