When I told my husband that playwriting teacher Peter Littlefield wanted class members to base a scene on an early moment when we first looked objectively at the adult world, he volunteered memories of his own.
Last weekend, Suzanne, John, and their spouses got to hear about a Philadelphia childhood and the horse that delivered milk, going reliably to the next house while the deliveryman placed bottles at the last one. They learned about an elementary school visit to a dairy company, and how it hit my husband so young that some men spend their whole lives lifting bottles into crates. He also remembered catching the tail end of the street lamplighter age. He has since mentioned ice delivery at the Jersey Shore and how you would put a special sign in the window indicating how many pounds of ice you wanted for that week.
There was also coal delivery in large canvas bags. Believe it or not, my husband is not that old.
Even Suzanne and John should remember that coal was delivered next door for several years after we moved to town. And clearly coal is still being delivered somewhere, as in this video a guy put on YouTube. I especially like the speech balloons he added.