 Another special series was "", a 38-week tour of the U.S. based on the works of 40 famous American writers.During 2008 and 2009, as part of programming specially commissioned for the 200th anniversary of the birth of Abraham Lincoln, C-SPAN produced a series titled "Lincoln 200 Years", which featured episodes on a variety of topics relating to the life of Lincoln including his career, his homes and his opinions of slavery.The network has also produced special feature documentaries of American institutions and historical landmarks, exploring their history to the present day.