By the way, I have one more question: Does any photo of smiling Walther Wever exist?
All the photos available show him with a very sad face...
https://alchetron.com/Walther-Wever-(pilot)
https://ipfs.io/ipfs/QmXoypizjW3WknF...r_(pilot).html
https://books.google.pl/books?id=A7v...JG%207&f=false
(In fact, in the last photo he is wearing some kind of glasses which don't look like sunglasses, but as a pilot, he had to have good eyesight, so he can't have worn corrective glasses. What glasses were those?)
Thank you in advance.