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 at the west end of the Speaker's lobby leads to the hallway known as the west corridor of the House. At the south end of this corridor, until recently, were the offices of the Clerk and of the Sergeant-at-Arms of the House. They are now occupied by the Committee on Appropriations, where originate all appropriation bills considered by the House, excepting those relating to rivers and harbors, post-offices and post roads, the army and navy, and foreign affairs. Opening off the same corridor is the room which is devoted to the Committee on Rivers and Harbors. Directly north is the office of the journal, printing and file clerks of the House, where are preserved the original Messages which have been sent to that body by the Presidents from the time of the establishment of the government.