The Frick Pittsburgh presents Dr. Gretchen Sorin, the author of "Driving While Black: American Travel and the Road to Civil Rights" in conversation with Dr. Elizabeth Barker on September 23rd, 7pm in a virtual conversation by Zoom.  Award winning documentarian Ric Burns has produced an upcoming feature film broadcast on PBS and WQED on October 13th. In this interview with Jim Cunningham, Ric and Gretchen talk about their work inspired by the Green Book assembled by Victor Green in 1936 which provided for three decades a way for black families to evade many dangers presented by racist society allowing some freedom on the road.