Much of the collection consists of Wolsey's copies of booklets, brochures, catalogs, and manuals concerning combines, corn pickers, and other machinery and parts made by and for the Oliver Corporation. Additional items included in the collection are production charts (1960-1962), speed charts for various machines, correspondence regarding a damage suit against the company (1967), and books on machinery and engineering principles.

Much of the collection consists of Wolsey's copies of booklets, brochures, catalogs, and manuals concerning combines, corn pickers, and other machinery and parts made by and for the Oliver Corporation. Additional items included in the collection are production charts (1960-1962), speed charts for various machines, correspondence regarding a damage suit against the company (1967), and books on machinery and engineering principles.

Much of the collection consists of Wolsey's copies of booklets, brochures, catalogs, and manuals concerning combines, corn pickers, and other machinery and parts made by and for the Oliver Corporation. Additional items included in the collection are production charts (1960-1962), speed charts for various machines, correspondence regarding a damage suit against the company (1967), and books on machinery and engineering principles.