Standard Company Name: Keystone Sewing Machine Company Name: Keystone Sewing Machine Title: [Trade card featuring the Keystone sewing machine] Imprint: [187_] Pages: 1 Notes: Format: Trade cards Descriptive Notes: Plain business trade card just stating name of machine and where it can be purchased in Philadelphia, printed information superimposed over picture of sewing machine. Smithsonian Location: NMAH. Archives Center. Warshaw. Box: 5 ; Folder 10 (about locations) Display Scanned Item: No images available (about image availability) Record Number: 4281