Recently I obtained some old ww2 era photos and this came with it. It seems to be a document dated September 30th, 1938. The contents seem to be of someone asking to be sent the birth certificate of a Anna Rosina Kaschke born in 1809. Not completely sure why they’d need someones birth certificate who would have been long dead. It came with two other letters similar to this one. All different dates but asking to be sent birth certificates and marriage certificates of different people. The letters all conclude with the common “Heil Hitler”. Any thoughts?