"ginneries" . "Munger System Gin" . "roller gins" . . . . "ginner" . . . . "Whitney\u2019s invention" . "jinning presses" . "ginned" . "cotton-ginning" . "Single roller cotton gin" . . . "gin house" . . "gin-house" . . "gin" . . "cotton gins" . . "gins" . . . "cotton ginning" . "ginning" . "Cotton gin" . . . . "ginnery" . . "Cotton gin" . . . . "seeds from raw cotton" . "cotton gin" . "Munger System cotton gin" . "Cotton Gin." . "saw gin" . "Cotton Gin" .