Leo
Trevor Henshaw in his excellent book
The Sky Their Battlefield TSTB from 1995 have about 20 pages with American losses during the War diveded into 4 parts.
A: LÉscadrille Lafayette 1916.1917
B: US Air Service Aero squadrons 1918
C: Americans known to have been casaulties whilst serving with the French Air Service in 1918.
D: Americans known to have been casaulties whilst serving with the French Air service in 1917-1918.
The American losses serving in british units is mentioned within this separet part(including 17 and 148 A sq).
One loosing part is that Trevor seldom have the serial number(S/N) of their aircraft. The reason for that is mysterius...
VBR
Gunnar