the paper by d'amecourt was published in yet liberatore credits d'amecourt with coining the word some two years earlier i am no longer thinking that la conq ete de l'air par l'h lice expos d'un nouveau syst me d'aviation is the holy grail and that the source is some other correspondence of d'amecourt's perhaps with one of his contemporaries or some other worthy i still feel that the paper has served as a clue of sorts through wolf's translation to getting closer to the truth