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The story of blacks living in Georgetown is as well-known to the neighborhood’s present residents as the name of the African-American who invented traffic signals. (It’s Garrett Morgan.) In Black Georgetown Remembered, authors Kathleen M. Lesko, Carroll R. Gibbs, and Georgetown University Professor Valerie Babb shed light on this little known aspect of the District’s history. Babb will discuss the book and screen the documentary that inspired it. Another narrative of African-Americans in the District will be recounted in “Tellabration”: This time the locale is U Street (pictured). Conceived by a group of scholars and part of the yearlong oral history effort “I Remember U,” “Tellabration” invites those who lived in the neighborhood between 1920 and 1960 to adopt the role of modern-day griots, sharing their memories with an interviewer and an audience. Participants will be videotaped, and the most colorful and diverse stories will be transcribed and made available for future study. “Tellabration” takes place from 1 to 5 p.m. Saturday, Feb. 20, at Howard University’s Fine Arts Building, 6th & Fairmont Sts. NW. Free. For reservations call (202) 785-2068; “Black Georgetown Remembered” begins at 6 p.m. Thursday, Feb. 25, at Heurich House, 1307 New Hampshire Ave. NW. $7. (202) 785-2068. (Alexandra Phanor)