books.google.com - During his four years in the White House, Abraham Lincoln received between 250 and 500 letters a day—not only correspondence from public officials, political allies, and military leaders but from ordinary Americans of all races who never knew the president yet nonetheless felt the urge to share their...http://books.google.com/books/about/The_Lincoln_Mailbag.html?id=pbnEji1EOZkC&utm_source=gb-gplus-shareThe Lincoln Mailbag