The collection consists of business materials related to various citrus manufacturing companies in the Riverside, California area owned or run by George H. Gobruegge. Companies represented in the collection include Gobruegge, Klein & Co., California Citrus Cash Co-Operative, Fay Fruit Co., and Gobruegge & Hirst.

Types of materials in the collection include business cards, invoices, packing slips, stock certificates, contracts, brochures, and price lists. All receipts, packing slips, invoices, and other forms in the collection are blank.