What do the doors of Advent calendars conceal? Chocolates, sometimes, or toys. Sometimes there are illustrations of chocolates and toys. And holly. And snow. Things that make Christmas Christmas.Derek McCormack's Christmas Days is an Advent calendar in words and images. The chapters are doors, each wittily illustrated by Seth, and each offering a behind-the-scenes look at the making of something quintessentially Christmassy. Wrapping paper, toy stockings, tree stands. When did they become part of Christmas? Where were they made? Who made them?A blend of history and reportage, Christmas Days includes a cast of incredible characters and a sampling of festive holiday treats from the past and present.