Adults may be interested in this book: The History of the Snowman: From the Ice Age to the Flea Market by Bob Eckstein. This is from the jacket flap:
Who made the first snowman? Who first came up with the idea of placing snowballs on top of each other, and who decided they would use a carrot for a nose? Most puzzling of all: How can this mystery ever be solved, with all the evidence long since melted?