Hears Mordecai Johnson on Gandhi
· First Unitarian Church of Philadelphia, Philadelphia, Pennsylvania, United States

Wikimedia Commons · Creative Commons Attribution-Share Alike 3.0 Unported · file King attended Mordecai Johnson's Philadelphia lecture on Gandhi, an important influence on his adoption of nonviolent social action. The exact date and venue are supplied by the linked Wikipedia chronology; the Stanford quotation independently confirms King's attendance in Philadelphia in 1950.