The letter refers to a map found in the remains of the aircraft at Bouveret. The map indicates a route via Annecy and a second to the west of Lyon.
Included is the map with the routes marked on.
Report form the Commander, District 1, Land Division regarding violations of Swiss airspace on night of 12/13 July 1943 when all areas covered by the Territorial Inspectorate of District 1 received alerts which began at 00.06 and continued until…