Vintage IBM Data Processing 3-ring binder containing Smada Software 'Disk Bonanza #1 for the Commodore 64' materials, copyright 1984 Smada Software, Bellevue, NE. Binder includes tabbed dividers (Consultation, Color Codes, Buying & Selling), program listings, printer font charts, a 1985 dealer letter from Lynne G. Adams (President) with handwritten note, and an invoice to a customer in Mobile, AL. A fascinating piece of early home-computer / Commodore 64 software history. Binder shows wear, scuffs, and light soiling consistent with age. Pages show handling wear, some edge tears, and age toning. Sold as-is as a vintage collectible reference lot. Please review photos carefully as they form part of the description.