. >> march 30th, 1981, would-be assassin john hinckly fires six shots, this weekend on "american artifacts" on the race to save a president, sunday at 7:00 and 10:00 p.m. eastern on "american history tv" this weekend on c-span3. >>> there's a new website for "american history tv" where you can find our schedules and preview our upcoming program. watch featured video from our regular weekly series as well as access history tweets and social media from facebook, youtube, switter and four square. follow "american history tv" all weekend, every weekend, on c-span3 and online at cspan.org/history. >>> each week at this time "american history tv" features an hourlong conversation from c-span's a sunday night interview series "q and a," here's this week's encore "q and a" on "american history tv." >> this week on "q and a," our guest is author and historian david mccollough. the interview took place at the montpelier house of the general henry knox museum in thomaston, maine. >> david mccollough, you told an audience outside of this henry knox museum a couple of days ago that everybody in america