4-11-75 Mn

I am F looking for any birth family members. Here is what I know. Born in Edina MN on Fri. April 11, 1975. She was 19 blond hair blue eyes 5'1 he was 20 6'2 dark hair and eyes. I am 1/4 French, English, irish and german. They were college students. I was adopted thru catholic charities and was in foster care until my adoption was finalized June 8, 1975. No affidavit of disclosure signed, I wrote to the courts to allow me to get just medical info and was denied. I cannot afford what catholic charities charges for a search. Anyone out there?!?!