This story was originally published on The Conversation and appears here under a Creative Commons license. Clement Clarke Moore’s 1823 poem “Account of a Visit from St. Nicholas” redefined Christmas in America. As historian Steven Nissenbaum explains in The Battle for Christmas, Moore’s secular St. Nick weakened the holiday’s religious associations, transforming it into a familial celebration that culminated in Santa Claus’s toy deliveries on Christmas Eve. Nineteenth-century writers, journalists, and artists were quick to fill in details about Santa that Moore’s poem left out: a toy workshop, a home…