. >> and at eight on lectures in history, professor alan gelzo on the dred scott u.s. supreme court decision. >> what is itemny saying here? -- toni think saying here? -- tony saying here? there is now no restatement, not even the restraint of popular sovereignty on taking slaves into the for stories. >> sunday at 10 a.m. eastern, opening ceremony of the museum of the american revolution in philadelphia with speakers, former vice president joe biden, historian and author david mccullough, the museum's president and ceo michael quinn, and journalist and author cokie roberts. >> it's my hope that this beautiful new museum helps inspire you to become both active, involved citizens in this very great country. because history has its eyes on you. >> and then at eight on the presidency, author katherine sinly talks about florence harding and the precedent she set as first lady. >> she'd been this dire straits medically, so she could relate to kinds of things that they were going through. now, it was interesting because out of this veterans cause came the veterans bureau, rig