Charles Lindbergh – Encyclopedia of U.S. History
Lincoln Memorial – Encyclopedia of U.S. History
Lincoln-Douglas Debates – Encyclopedia of U.S. History
Lewis and Clark Expedition – Encyclopedia of U.S. History
Abraham Lincoln – Encyclopedia of U.S. History
Liberty Bell – Encyclopedia of U.S. History
Lend-Lease Act – Encyclopedia of U.S. History
Legislative Branch – Encyclopedia of U.S. History
Robert E. Lee – Encyclopedia of U.S. History
League of Nations – Encyclopedia of U.S. History