Carolyn, - there is no organization in Germany that will register or help look for these children´s biological fathers. You have to think about that the 1940ies were time of war or right after war. Private contacts between German women and American soldiers were not even allowed, and when a German lady got pregnant and had an illegitimate baby, often after the father went back home again to the States, the mother of the child usually was in a bad situation. Most of these women married German husbands, and many of them got the child adopted by the new husband, including a change of last name.
I know that these children often desparately are looking for their biological fathers when they find out what happened, and very often in vain. To be successful at all, you would have to know the child´s mother´s complete name, where she lived at that time, the exact birth date of the child would be helpful, and then you might have a slight chance. These children, when born in the 1940ies, will be between 50 - 60 years old now themselves, with own families, children, grandchildren. Find out how much is known about the details I mentioned! -
Ute (living in Germany)