A Flurry of Photos

How cold was it? It was so cold that ...                         Thomas J. Abercrombie

National Geographic has put together a selection of its vintage photographs of winter around the States (slideshow): http://www.nationalgeographic.com/125/photos/explore-winter/?utm_source=NatGeocom&utm_medium=Email&utm_content=pom_20131215&utm_campaign=Content