Eugene L. Vidal, Aviation Accident Report: Mercury Chic crash on 22 June 1935 (1935)
“ Shortly after this, the plane, flying at about 1,500 feet, was seen to go into a glide with the engine throttled for a couple of hundred feet. As it levelled out, both wings went into a vertical dive over which the pilot had no control. WItnesses state that the plane had not engaged in any acrobatics and that the glide which preceded the folding back of the wings was not excessive. ”
