Birth daughter searching for b. father

I was born in Omaha, NE in April of 1963. My mother was supposed to be 18 and a college girl. She supposedly had enough of a relationship with my birth father that they discussed marriage. I don't know if that is accurate though. My birth father was tall and dark haired (and I think dark eyed), and my birth mother was blond, blue eyed, and about 5'4". She was of a Germanic heritage. I believe she was one of the first of her family born in the USA. My birth father was a couple of years older than she. He was supposedly in some branch of US military. I don't know anything else about him. I don't even know if he has any idea that he has a daughter from 1963 who probably looks a lot like him. If he is out there and curious or searching, he may not know it, but my birth mother's mother had a great deal to do with my relinquishment (or so I'm told). She is supposed to have secretly whisked my b. mother off to Omaha to give birth and to relinquish. I don't know where my b. family came from. I am guessing my b. mom was probably not from Omaha. She might not have even been from Nebraska. I am thinking she had probably lived somewhere in the Midwest though. Anyway, my birth grandfather was NOT to know about his daughter's situation! Well, I thought I'd post this as a long shot. Does any of this ring any bells with you? If so, please leave a reply. Thank you.