men of mystery

I was adopted.
My dad died in March 2002. He was a scientist and an academic administrator. I have not seen him since the mid eighties. In 2000 i wrote a brief letter and he responded that he did not want contact with me... at least not directly.
None of his obituary notices mention a son.
I learned of his death in march 2003.
He did in later years begin a geneological research project. My sister, has those documents but does not seem to understand why I would like to see them.
My biological parents are both younger... Their separation may have had something to do with the Vietnam war. Or so I was told. But my bio-father has been a Scotsman since '62 (The year I was born) and I have spoken with him once . . .To my knowledge.
the truth is that most of my best friends are Vietnam Vets.... so I have an Identity confusion. My Adoptive parents were nearly old enough to be my grand parents.

Life is weird