In the 1960s, philanthropist and Yale alum Paul Mellon donated “to his alma mater the largest collection of British paintings, sculpture, prints, drawings, rare books and manuscripts outside the UK along with funds for a building by Louis Kahn–gifts today worth more than $1 billion.” Little wonder, then, that the resulting museum, the Yale Center for British Art, leads the charge among American and British museums celebrating Mellon’s centennial this year.