Under My Wings. Indianapolis: The Bobbs-Merrill Company, Inc., 1956.

Snow, Crocker. Log Book: A Pilot's Life. Washington: Brassey's, 1997.

"Plane and Owner Held on Charges: E. P. Halliburton, Oil Man and Pilot Seized and Ship Taken as Liquor Carrier" Los Angeles Times, June 7, 1931, B1; "Oil Man Faces El Paso Trial: May Return E. P. Halliburton on Hooch Charge" El Paso Herald-Post (El Paso, Texas), 1; Memorandum, re: Airplane Activities (week of April Eighth) from J.B. Morgan, Customs Agent in Charge, Coast guard Intelligence Division, Entry 297, Record Group 26, Box 48. Bert R. J. Hassell A Viking With Wings (Bend, OR: Maverick Publications, 1987), 54-56; K. M. Molson and A. J. Shortt The Curtiss HS Flying Boats (Annapolis: Naval Institute Press, 1995), 75-79. Lawrence Mahoney The Early Birds: A History of Pan Am's Clipper Ships (Miami: The Pickering Press, 1987), 23; Horace Brock Flying the Oceans (Lunenburg, VT: The Stinehour Press, 1979), 47-48. John Walton "Has Faith in Underlying Morality of People of This Country to Compel Enforcement of Prohibition Laws" in The Prohibition Question: Viewed From the Economic and Moral Standpoint (Baltimore: Manufacturers Record Publishing Co., 1922), 40-1. Ed Bergman "Bimini booze run" Private Pilot March 1967, 48. "Aerial Smuggler Shortly A-Wing?" Chicago Daily Tribune, December 2, 1906, 6. "Smuggling By Aeroplane" Los Angeles Herald, June 27, 1909, 55. "Airships and Tariffs" Logansport Pharos Tribune (Logansport, Indiana), January 30, 1907, 2. "Aerial Smuggling" Waterloo Semi Weekly Courier August 11, 1908, 4. Tombstone Weekly Epitaph (Tombstone, Arizona) February 6, 1910, 4. "Airships and Tariffs" Logansport Pharos Tribune (Logansport, Indiana), January 30, 1907, 2; "Smuggling By Airship" The Washington Post (Washington, DC) April 25, 1909, 5. "Aerplanes Legal Rights: Protection From Flying Machines Bring New Problems That Puzzle Bench and Bar" The Washington Post (Washington, DC) June 19, 1910, 4.