Glackens was a boyhood friend of Albert C. Barnes (1872–1951), the Philadelphia-born pharmaceutical entrepreneur, self-made millionaire, art collector, and creator of the Barnes Foundation. They knew each other from Philadelphia’s prestigious Central High School, and when they renewed their friendship in 1911, Glackens guided Barnes toward an appreciation of modern French painting. In early 1912, Barnes wrote to Glackens: “Dear Butts, I want to buy some good modern paintings. Can I see you on Tuesday next in New York to talk about it?” The following month, with $20,000 from Barnes in his pocket, the artist traveled to Paris on a buying trip and returned with works by Pierre Bonnard, Paul Cézanne, Maurice Denis, Vincent van Gogh, Pablo Picasso, Camille Pissarro, and Pierre-Auguste Renoir. These purchases became the cornerstone of Barnes’s fabled collection. The two men remained close, and Barnes became his loyal and most important patron. Barnes found Glackens indispensable, stating in 1915, “The most valuable single educational factor to me has been my frequent association with a life-long friend who combines greatness as an artist with a big man’s mind.” From November 8, 2014 to February 2, 2015, the Barnes Foundation presents William Glackens—the first comprehensive survey of the artist’s work since 1966. Images courtesy: Barnes Foundation, Philadelphia.