Eddie Rickenbacker,
Fighting the Flying Circus — Chapter 15
(1919)
“ I put Captain Marr's Nieuport up to a little over 19,000 feet that morning, and there she hung. Every artifice that ever moved an engine was experimented in but without increasing her capacities an inch. Just as I had satisfied myself that I had exhausted her possibilities, I discovered my old friend, No. 16, winging his way calmly towards me. He was certainly prompt and business-like in the way he kept his appointments. Just as yesterday, the Rumpler was some two thousand feet above my highest possible elevation. ”
