This online collection includes a selection of concert posters documenting PSO performances for audiences in Pittsburgh and around the world. Images that were selected for inclusion in the online collection include material from the historic 1964 U.S. State Department-sponsored diplomacy tour, concerts in Mexico, as well as, the concert halls and public parks of Pittsburgh, PA. The images depict the PSO's heralded lineage of Music Directors, including Fritz Reiner, William Steinberg, Andre Previn, Marriss Jansons, Lorin Maazel, and Manfred Honeck, who joined the PSO in 2009.