Hall, W. P. (1902). Typescript letter. Military Promotion of Rank, To: Brigadier General Robert O'Reilly, Surgeon General From: Colonel W. P. Hall, Assistant Adjutant General, September 16, 1902.
Chicago-viite (17. p.)Hall, William Preble. Typescript Letter. Military Promotion of Rank, To: Brigadier General Robert O'Reilly, Surgeon General From: Colonel W. P. Hall, Assistant Adjutant General, September 16, 1902. 1902.
MLA-viite (8. p.)Hall, William Preble. Typescript Letter. Military Promotion of Rank, To: Brigadier General Robert O'Reilly, Surgeon General From: Colonel W. P. Hall, Assistant Adjutant General, September 16, 1902. 1902.
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