Henry Grant Plumb’s daughter, Margaret Plumb, lived in one of the first cooperative apartment buildings in New York City, at Gramercy Park East, in a magnificent 1880s building. Famous actors, writers, artists lived in that building and still do today. Margaret Plumb became a classicist scholar and associate head librarian at Hunter College. One of her friends in the apartment building was Margaret Hamilton, famous for her role as the Wicked Witch of the West in The Wizard of Oz. They enjoyed chatting over a good cup of coffee, perhaps Maxwell House. What a great story, shared by a family descendant.