During more than 40 years as a professor and curator of collections with the Achenbach Foundation for Graphic Arts and the Fine Arts Museum of San Francisco, Mr. Johnson’s passion for collecting works by Degas grew to intriguing heights. Lecture attendees are bound to take pleasure in learning first hand how Degas’ artistic genius first captured Johnson’s attention and of the many adventures while tracking down works on paper by Degas and his circle of artistic colleagues.