April 4 marks the 150th birthday of John G. Johnson, renowned Philadelphia lawyer and avid collector of European painting from the 15th through the 19th centuries. To celebrate the anniversary, the Museum has mounted a display of biographical and archival materials that document the patterns of Johnson's emerging taste and the decisions he made to acquire some of the most important works to come to this country at the turn of the century. The display will include several critical paintings pursued by Johnson for his collection, which now forms the core of the Museum's holding of old master paintings.