21. [Aerial view] Format: Photographs Collection: Boston City Hospital Collection Date: [1960?–1980?] Institution: Boston City Archives
22. [Aerial view] Format: Photographs Collection: Boston City Hospital Collection Date: December 1973 Institution: Boston City Archives
23. [Aerial view] Format: Photographs Collection: Boston City Hospital Collection Date: [1900?–1950?] Institution: Boston City Archives
24. [Aerial view] Format: Photographs Collection: Boston City Hospital Collection Date: [1960?–1980?] Institution: Boston City Archives