In 1938, Boulanger returned to the US for a longer tour. She had arranged to give a series of lectures at Radcliffe, Harvard, Wellesley and the Longy School of Music, and to broadcast for NBC. During this tour, she became the first woman to conduct the Boston Symphony Orchestra. In her three months there, she gave over a hundred lecture-recitals, recitals and concerts These included the world premiere of Stravinsky's "Dumbarton Oaks Concerto". At that time she was seen by American sculptor Katharine Lane Weems who recorded in her diary, "Her voice is surprisingly deep. She is quite slim with an excellent figure and fine features, Her skin is delicate, her hair graying slightly, she wears pince-nez and gesticulates as she becomes excited talking about music."