One of the 2 D.H. 6 prototypes either A5175 or A5176 showing the traditional de Havilland rudder, however production machines were fitted with a more angular rudder. The D.H 6 was used as a training aircraft and first flew in late 1916 with Geoffrey de Havilland at the controls. This scanned image is a reprint by Samson Clark of London (No SCDH 9667), reprint date and photographer unknown.