Get it while it’s hot! You only have until January 3, 2012, to see "What’s Cooking, Uncle Sam" before it closes. This photograph of a be-napkined pig comes from the USDA’s attempts to interest farmers in hog nutrition. Stop by the National Archives in Washington, DC, and check out this fascinating exhibit for free!

Get it while it’s hot! You only have until January 3, 2012, to see "What’s Cooking, Uncle Sam" before it closes. This photograph of a be-napkined pig comes from the USDA’s attempts to interest farmers in hog nutrition. Stop by the National Archives in Washington, DC, and check out this fascinating exhibit for free!