Cunningham, Charlie (1989). "Cunningham Offroad Bike Infopac"(PDF). Point Reyes, California: Mountain TranSport. Archived(PDF) from the original on October 26, 2015. Retrieved October 26, 2015.
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US patent 5088535, Potts, Stephen M.; Slate, Mark J.; Cunningham, Charles B.; and Merz, James H., "Bicycle or motorcycle tire tread", issued 1992-02-18
US patent 4763957, Poehlmann, Paul W.; Slate, Mark J.; Potts, Stephen M.; and Cunningham, Charles B., "Bicycle hub constructions and lubrication thereof", issued 1988-08-16
US patent 4765443, Cunningham, Charles B., "Caliper brake for mountain bicycles having wide tires", issued 1988-08-23
Cunningham, Charlie (1989). "Cunningham Offroad Bike Infopac"(PDF). Point Reyes, California: Mountain TranSport. Archived(PDF) from the original on October 26, 2015. Retrieved October 26, 2015.
