The City of Brotherly Love has a cool happening this weekend: the Quest for Freedom Live and Learn Weekend.

Friday evening, Temple University will host author James Oakes, the 2008 Lincoln prize winner and author of The Radical and the Republican: Frederick Douglass, Lincoln and the Triumph of Anti-Slavery Politics. The discussion will center around Lincoln, who's been experiencing renewed popularity recently. (President Obama will celebrate the 16th president's birthday next week.)

Saturday, there will be special tours of the National Constitution Center's America I AM: The African American Imprint. This 15,000-square-foot new exhibit has more than 200 artifacts from 400 years of history—you can see Malcolm X's diary, the robe Muhammad Ali wore to 1974's Rumble in the Jungle, and a first edition of Uncle Tom's Cabin. Visitors can also leave video "imprints" of their own stories, thus making the exhibition an oral history.

In celebration of Black History Month, Philly's official visitor site has highlighted a ton of events and activities going on all February.

The speech is Friday at 6 p.m.; admission is free. The National Constitution Center is open 9:30 a.m.-6 p.m.Saturday; admission is $17.50 and includes the America I AM exhibit, which runs through May 3, 2009 before beginning a four-year tour. If you attend the speech Friday evening, you can get half-price tickets to the center for Saturday; see all the details here.