this weekend on "american history tv" on c-span3, saturday at 8:00 a.m. eastern, united states holocaust memorial museum director sarah bloomfield and alice greenwald, president and ceo of the national september 11th memorial and museum in new york city, talk about the creation and message behind both museums. >> but why would you build it in washington, people asked. doesn't it belong in berlin or jerusalem? so we designed the architecture and the combinatioexhibitions t that question, how is it that human beings can do this to one another. and then throughout the exhibitions we keep bringing back what america knew and when american knew it. >> sunday at 10:00 a.m. eastern, the centennial of america's entry into the great war, from the memorial in kansas city. at 2:00, pulitzer prize winning

historian david mccullough on how the founders persevered in the face of hard shship. >> the first seven presidents of the united states, john adams was the only one who never owned a slave out of principle, not because he couldn't necessarily afford one, out of principle. and abigail's feelings about it were even more strongly voiced than his. >> and then at 8:00, on the presidency. university of virginia presidential scholar barbara perry talks about the traits of a great president. >> the sign of a good leader is a leader who is self confident but not arrogant. so confident in his own leadership and in his intellect that he didn't worry about having really smart people around him. >> for our complete american history tv schedule, go to c-span.org.

saturday, book tv is live from the 15th annual annapolis book festival in maryland. beginning at 10:00 a.m. eastern, our coverage includes a panel discussion on income inequality with catherine eden, author of "$2 a day: living on almost nothing in america," and stephanie did e luca, authorize "coming of age in the other america." author brian stolarz, with his book, "grace and justice on death row." at noon eastern, author discussions with mark schreiver, author of "pilgrimage." michael hayton. thomas dolby, author of "the

speed of sound." watch the 15th annual annapolis book festival live on saturday at 10:00 a.m. eastern on c-span2's "book tv." researchers and advocates discussed autism awareness at an event on capitol hill. speaks included julia, "sesame street"'s newest character, who is autistic, and the co-chairs of the congressional autism caucus. hol holly robinson peete moderated this eventually which features a preview of julia's appearance on "sesame street," set to air april 10th. my name is jasmine. i'm 7 years old. i share my bedroom with my little