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Blackwelder Manufacturing Co. Records.

Collection Number: D-326

Business records, correspondence, photographs, patent information, manuals, bills of material, drawings, blueprints, and specifications. Manufacturing firm located in Rio Vista, California since 1902 whose work focused on the development of tomato harvesters and other agricultural equipment.

Finding Aid

Finding Aid on the Online Archive of California

Inclusive Dates



58 linear feet


Agricultural Technology

Additional Collection Info

View digitized films from the Blackwelder Manufacturing Records on the Internet Archive

Blog post about the collection