When the Yale Peabody Museum reopens as a free museum next year, there will be much more than dinosaurs to wow visitors. There’s a clay page from a Mesopotamian cookbook, dating from 1700 B.C.E., which Peabody staffers have used to make a dish. There are the tiny, cute “mommy and her seven piglets.” There’s a section of the first book known, the Epic of Gilgamesh. And there are three pages of ...