The hydrogen-filled blimp was a successor to the Graf Zeppelin which had successfully traversed the world in 1929. Built by Nazi Germany, the Hindenburg was a ligher than air passenger ship designed to accomodate transatlantic travel.
Needless to say LTA travel fell off markedly after May 6, 1937. It must have been a sight to see in those days but I must admit I would have thought twice about boarding what was essentially an explosion waiting to happen!
Image from Wikipedia Commons. As a work of the U.S. federal government, the image is in the public domain.
Other interesting events for May 6th:
1955: Grace Kelly meets Prince Rainier
1959: Raymond Burr wins an Emmy
1992: Marlene Dietrich dies