The Thelma McDaniel Collection at the Historical Society of Pennsylvania consists of newspaper articles, pamphlets, flyers, position papers, letters, and reports accumulated between 1935 and 1989 by Ms. McDaniel, a politically engaged African American resident of Philadelphia. By examining some of these primary sources, students can gather direct evidence of the transition from the nonviolent direct action of the early civil rights era to the more aggressive tactics associated with Black Power.