This section is from the book "The National Capitol. Its Architecture Art And History", by George C. Hazelton, Jr. Also available from Amazon: The National Capitol Its Architecture Art and History.
The door to the north within the entrance leads to the abode of the Committee on the District of Columbia. To bespeak the beauty of this District room, it is necessary only to say that it was decorated by Brumidi's brush. Four groups in fresco symbolize History, Physics, Geography and the Telegraph.