The following post originally appeared in the summer 2015 issue of Western Pennsylvania History Magazine. In the late 1930s, when Jacob A. Evanson joined the staff of the Pittsburgh…

  I Campagnoli marching in a parade in downtown Pittsburgh, 1980s. I Campagnoli Papers & Photographs, Detre Library & Archives at the History Center. Gift of Mary Ferro. Musicologist Alan…

Portrait of Mary Lou Williams, New York, N.Y., c. 1946. Photo by William P. Gottlieb, courtesy of the Library of Congress. As an American jazz hub during the 1930s, Pittsburgh…