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.
Navigational computations and a chart for an operation to the Cologne-Gremberg marshalling yards. On the reverse of the chart is a handwritten note [indecipherable].
Navigational computations and a chart for an operation to Wuppertal, Vohwinkel marshalling yards. A vertical aerial photograph taken during the attack is included and has the annotation '200 yds 280°' and on the reverse '200 yds 280° Bomb door mod…