spot onblack springfield's history. who would have thought there would be a race riot in the home of mr. lincoln? usually associate race riots in the south and lynchings in the south, but, no. this was in the north. it said we should remember our or we are condemned to repeat it. get to theill never wherein springfield something like that would happen again. are staff recently traveled to springfield illinois to learn about its rich history. learn more about spring field at sea spend at work. you are watching american history tv all weekend, every weekend on c-span3. mr. costello is a senior historian at the white house historical association. this 25 minute talk was part of a conference highlighting the work of william thornton, who is known as the capitol's first architect. william: i hope you are all sugared up. although, i don't know if you will need it.