1974 Press Photo Princess Margaret listens to William Van Allen in Philadelphia

Britain's Princess Margaret displays an expression of interest as she listens to William Van Allen, honorary chairman of the board of managers of Children's Hospital of Philadelphia, at ceremonies marking dedication of a new building at the hospital, Monday. Princess Margaret offered greetings from the Hospital for Sick Children in London.

Photo is dated 1974.

Photo measures 7.75 x 10.5 inches.