Re: Info on POW
The Archives POW database lists him (ASN 35259954), and shows his POW camp as:
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Stalag 2B Hammerstein
(99 work camps in vicinity of Koslin & Stolp)
West Prussia 53-17
(The "53-17" is camp latitude and logitude.)
A search engine inquiry for "Stalag 2B" returns quite a bit of info that might be of interest to you.