If you have the Aeronaut book by Robert Casari, American Military Aircraft 1908-1919 there is one color profile and several B&W photos. If you don't...
After handling a handful of handsome Halberstadts, I now salute the steadfast Sopwith Strutter. Examples below. There's even an Ottoman Halberstadt....
I'm happy and jealous at the same time. One of these years I'd like to get to Prague. Thrilled I get to Doncaster this year so maybe in another year...