The ebook deal of the day over at Amazon today is three top-rated American history books from historian Stephen E. Ambrose for only $1.99 each (that’s 80% off the list price).

– Undaunted Courage: Meriwether Lewis, Thomas Jefferson, and the Opening of the American West
– Citizen Soldiers: The U.S. Army from the Normandy Beaches to the Bulge to the Surrender of German
– Crazy Horse and Custer: The Parallel Lives of Two American Warriors

Note – this deal is valid only for today, Saturday, December 31, 2011, until 11:59pm PST.