Washington: Government Printing Office, 1916.
Hardcover. First edition. House Document No. 687 (64th Congress, 1st Session, 1915-1916). Octavo. 87pp., with many large folding color maps. Complete as issued in the original publisher's cloth. Moderate soiling to the boards, else near fine. Contains the investigative report of a special commission of army officers to establish an aviation school and training grounds for the Signal Corps (the military Aviation Service of the Army, and ancestor of the US Air Force), on land near the bay of San Diego, California. A nice copy, scarce in the trade, with the folding maps in fine condition.