  Brig. Gen. B. D. Foulois, Aviation Officer on Pershing's Staff Brig. Gen. B. D. Foulois, Dr. F. P. Keppel, Recently appointed Assistant Secretary of War Dr. F. P. Keppel, W. C. Potter, Chief of Equipment Division of Signal Corps W. C. Potter, Chief of Equipment Division of Signal Corps (© Harris & Ewing) Brig. Gen. C. B. Wheeler, Ordnance Officer on Pershing's Staff Brig. Gen. C. B. Wheeler, |
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