A Gable Leading Carton is actually a kind of packaging generally useful for liquid products and solutions like milk and juice. It gets its title from your gable-shaped prime, that makes it very easy to pour and reseal. Robert Gair was a Brooklyn printer and paper-bag maker throughout the 1870s. https://www.diigo.com/item/note/b80do/5w4s?k=757460895b4678e84259aa29727d41a5