The Milkman’s Robot Helper
In 2007, I moved into an apartment building in St. Paul that was built during the early 1920s. I remember asking the building manager what the small, two-foot tall doors attached to the outside of each apartment were for. The doors had long been painted shut and no longer opened to the inside of the apartments, as it looked like they should. The manager explained that the doors were used decades ago by milkmen who would make deliveries during the day while people were at work.
In the 1920s virtually all milk consumed in the United States was delivered directly to the home. By the early 1970s, it was only about 15%. By the 1990s, it was less than 1%. Whither the man of milk?