According to my copy of 'CHRONICLE OF AVIATION'
"England July 13 1919.
A British military airship operated by the RAF, the R.34, today accomplished the first two-way transatlantic air crossing. The outward journey was also the first air crossing of the Atlantic from east to west......
...It berthed at Roosevelt Field, Long Island, the ground crew being directed by an RAF officer who descended from the airship by parachute to take charge. "
They don't make em like that anymore..
