Cotton Gin Worm Gear Roller, Search the Collection, Spurlock Museum, U of I
NIPHA
Making Cotton - Fifteen Eighty Four | Cambridge University Press
Rotobar (Roller Gin) | Balkan Cotton Gin Machinery
Effects of harvesting and ginning practices on Southern High Plains cotton: fiber quality - John D Wanjura, Carlos B Armijo, Christopher D Delhom, Randal K Boman, William B Faulkner, Gregory A Holt,