By: The Smithsonian National Postal Museum (@postalmuseum)
Link: Hindenburg and Titanic – Mail Ships
Hindenburg was the largest flying post office ever. It provided the first regularly scheduled, entirely by air post service between Europe and North America.
Titanic was the largest floating post office of its day and bore its official status in its name, RMS Titanic—Royal Mail Ship Titanic.
Travelers on both ships enjoyed onboard postal service.