 Unveiled in August 2007, the C-SPAN Video Library contains all of the network's programming since 1987, totaling more than 160,000 hours at its completion of digitization and public debut in March 2010.Older C-SPAN programming continues to be added to the library, dating back to the beginning of the network in 1979, and some limited earlier footage from the National Archives, such as film clips of Richard Nixon's 1972 trip to China, is available as well.Most of the recordings before 1987 (when the C-SPAN Archive was established) were not saved, except for approximately 10,000 hours of video which are slated to be made available online.