Over the centuries, Thanksgiving traditions have changed with political, cultural, and religious winds. The holiday's mythic origins were propagated in the mid-nineteenth century, and soon Americans were all celebrating Thanksgiving on the fourth Thursday of November. Parades and football games are important pieces of Americana now synonymous with Thanksgiving -- as is the start of the Christmas shopping season. In this episode, historian David Silverman delves into the history of a quintessential American holiday whose development has as much to do with magazine editor Sara Josepha Hale as the Pilgrim Edward Winslow.