One thing about Aviation History and Nostalgia one learns something everyday. Doing further digging on the mystery aircraft posted at Post #44 and Graeme's comment that it could be a Standard Caproni I found the following photograph:-
This aircraft is reported to be a Caproni ca.5, or Caproni 600 hp, was designed in 1917 as a replacement for the old and effective Ca.3 bomber. I have also discovered that
A large quantity of Caproni 600 were produced for the US Navy and in late 1918 they were ferried by American pilots from Milan to Northen France, suffering severe mishaps. Their use by the Northern Bombing Group was minimal.
The aircraft in ed's photograph may well be a Caproni Ca.5 if so I would say it is a very rare photograph.