circa 1926: The advent of paper milk cartons was an important event for dairymen and delivery men. Six bottles are contrasted with the cartons on this delivery man's cart. (Photo by Fox Photos/Getty Images)
circa 1926: The advent of paper milk cartons was an important event for dairymen and delivery men. Six bottles are contrasted with the cartons on this delivery man's cart. (Photo by Fox Photos/Getty Images)