British Patent 13880/1845, "Specification of the Patent granted to Stephen Perry, of Woodland's-place, St. John's-wood, in the County of Middlesex, Gentleman, and Thomas Barnabas Daft, of Birmingham, Manufacturer, for Improvements in Springs to be applied to Girths, Belts, and Bandages, and Improvements in the Manufacture of Elastic Bands. — Sealed March 17, 1845", http://todayinsci.com/Events/Misc/Perry-ElasticBandsPatent.htm
