WICKSON, H, H. Sgt, 1430638. at L6 and 357 pow number 3494.
Ref: "Footprints in the Sands of Time", page 433.
And
http://www.rafcommands.com/database/pows/index.php
Rank Name, Number, Trade & Details Date Captured Unit POW No Camp
H H Wickson (1430638) 0000-00-00 3494 Stalag Luft L6 Heydekrug