Found this recommendation in my inbox today: Over Here!: New York City During World War II. My eyes have hearts in them.
Lorraine B. Diehl has also written about the Automat, Pennsylvania Station, and the subway system, all of which seem to be out of print, all of which need to be on my bookshelf, now. Time to go used-book-hunting. Or at least see if the library has any of them. Definitely want to find the Automat book.