Interested in learning some interesting facts about Thanksgiving? Then visit the Library of Congress. The Library of Congress has compiled a Thanksgiving Timeline beginning in 1541. By selecting different years you get a brief summary of what was happening in our country on Thanksgiving Day in that particular year. For example, in 1917 we were preparing for World War I and were in the process of observing rations. The Food Administration provided guides such as the Best Wartime Recipes to help families prepare altered versions of their Thanksgiving favorites. Click here for more.