looking for son born in Cheyenne March 1973

I am looking for a son that I gave up for adoption. He was born in Cheyenne at DePaul Hospital on March 14, 1973. I went through Catholic Social Services. I would like to meet him and let him know the real reason why I gave him up. That he has 2 beautiful half sisters. That I have thought of him often and want to know how his life has been. Thank you, Debbie Masters Allan