Scope and Contents This is a collection of letters (and telegrams) written by Umberto Nobile in Italy to Hermine Speier during her time in Geneva, Basel, and Frankfurt in April and May of 1938. During this period, Nobile is regularly commuting by train between Rome, where he lives, and Naples, where he is working as a professor of aeronautical engineering at the University of Naples. He tells Speier when new engineering possibilities occur to him, and he expresses nostalgia for the days in which, immediately...