Patents related to traction engines, harvesters, threshers, plows, cultivators, and steam boilers
name: label: Collection Creator
content: Brown, Bernis B., 1888-1960
setName: label: See more items in
content: Bernis B. Brown Collection
label: See more items in
content: Bernis B. Brown Collection / Series 4: Research Notes
unitdate: label: Date
content: 1868-1893
container: label: Container
content: Box 7, Folder 4
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials