Vintage Swissair airline timetable brochure, Sommerflugplan 1940, the summer flight schedule for 1940, second preliminary edition, valid from 1 April 1940. The brochure opens to three panels. The cover carries the Swissair script logo and an illustration of a Douglas DC-3 registered HB-IRA in Swissair livery with the Swiss cross on the tail fin. Inside, the brochure has deatails of Locarno to Rome by Douglas DC-2, and Locarno to Barcelona by Douglas DC-3, a fares table in five currencies, honeymoon and student discount terms, passenger insurance conditions, an air freight express service, a Douglas DC-3 cabin photograph, and Swissair's head office and booking office listings for Locarno, Zurich, Geneva, Rome and Barcelona. OK condition, with wear.