Dorothy Rice Sims a mutual friend, George Biddle, and wrote in her 1938 autobiography, "Curiouser and Curiouser", "I inquired Waldo’s height—he was six feet two. This seemed a dignified height. I told George to produce Waldo, which he did. We got married in Madrid, in a German Methodist Church, with the American vice-consul, who was a Filipino, to make it legal.” A website using the name "Mile High Club" regards the "Club's" "founder" as pilot and design engineer Lawrence Sperry as the "Club's" "founder", along with "socialite Mrs. Waldo Peirce" (Dorothy Rice Sims) citing their flight in an autopilot-equipped Curtiss Flying Boat near
Verville-Sperry M-1 Messenger at the Lincoln Memorial. The prototype was used by Lawrence Sperry who disappeared in 1923, flying a Messenger across the English Channel from France to England. The Messenger's small size, simple construction, and inexpensive cost made it ideal for testing and experimentation. As well as the original communications duties, the National Advisory Committee for Aeronautics used one in its pioneering aerodynamic research programs from 1923 to 1929. Sperry modified twelve into the radio-controlled Messenger Aerial Torpedo, an early flying bomb, and developed the apparatus for a Messenger to make the first successful airship hook on and release in December 1924.