Lufthansa + Graphic Design: Visual History of an Airline is a book by Lars Müller Publishers that highlights the corporate identity of Deutsche Lufthansa. In 1963 , Otl Aicher and his Gruppe E5 student group at the HfG Ulm were commissioned by Lufthansa to develop a new visual identity.
The book also includes the design and advertising history of Lufthansa from the 1920s until today, illustrations from the corporate archive, background articles, interviews, reproductions from the Ulm study of 1962, and the first corporate design manual for Lufthansa from 1963.
You can grab a copy on Amazon.