Gray, R.B. Development of the Agricultural Tractor in the United States
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: Writings
unitdate: label: Date
content: 1952-1956
container: label: Container
content: Box 3, Folder 6
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
scopecontent: label: Scope and Contents
content: Contains correspondence with R.B. Gray, head of the Division of Farm Machinery at the United States Department of Agriculture and a brochure for Harrison Machine Works, Belleville, Illinois.