Turns out it's not just for mustaches anymore.
Here's what The New American Cook Book had to say:
In spending the food money, milk should be considered first, as it is necessary for every one and is the best building food for children. It also supplies the body with fuel, minerals, and Vitamins A, B, and G.Pasteurized milk is safer than raw milk, because complete pasteurization kills germs that might be present, such as those that cause tuberculosis, infantile diarrhea, septic sore throat, typhoid fever, diphtheria, and scarlet fever. If raw milk is used or advised, it should, of course, be certified.Milk should be covered and kept cold; that will keep it clean, sweet, and free from strange flavors and odors.If there is no ice in the home, it may be necessary in hot weather to buy milk twice a day, letting the dealer keep it cold. A temperature between 45-50 degrees F. keeps milk from spoiling.
