"Effect of Rubber Resilience on the Operation of the Spiral Rubber Wiper Defoliator" drafts and research notes, 1966-1968

Charts and diagrams on energy needed to remove tobacco leaves
February 8, 1962

Charts, diagrams, and math formulas on tobacco stalk cutting, 1960-1961

Correspondence related to agricultural machinery for tobacco crops, 1958-1967

Diagrams of tobacco defoliator components
March 30, 1971

Harvesting at Graham Howard's farm
circa 1967

Harvesting machine design

Harvesting machinery and other agricultural machinery

Harvesting: Tobacco Components :: Equipment Studies :: Physical Characteristics and Properties
1955 to 1962

Harvesting: Tobacco Components, Quotations of and Requisitions for :: Equipment Studies :: Physical Characteristics and Properties
1954 to 1955