At the turn of the 20th century and before the advent of the electric refrigerator and the supermarket, milkmen traveled the streets of American towns in horse-drawn wagons, delivering milk daily because it would have spoiled without proper refrigeration. This aspect of daily life became the theme of toys such as miniature milk wagons, and even inspired board games such as The Merry Milkman. The game, introduced in 1955 by the Hassenfeld Brothers (later Hasbro), allowed children try their hand at the delivery business. Players travel from location to location, delivering eggs, milk, and cheese in miniature dairy trucks. The box lid guaranteed "Hours and hours of educational creative play."