Prepared by Cheryl R. Ganz, Chief Curator of Philately.
This finding aid was prepared with the assistance of Barbara Waibel, Zeppelin Museum Friedrichshafen, Thomas Lera, NPM Blount Research Chair; Katie Burke, Museum Specialist, Philately Department; and the NPM Council of Philatelists Research Committee and Dieter Leder.
Images are from the John P.V. Heinmuller Specialized Collection of Zeppelin Mail at the Smithsonian National Postal Museum.