Looking for Adopted Half Brother (Born 1976)

I've decided to start the search for my older brother that was adopted. Below is some of the information I know. Brother DOB: 08/15/1976 or 08/16/1976 Bio Mom: Anna M. - DOB: 04/1960 Bio Dad: Richard K. My mother was sent to St Elizabeth Home for Unwed Mothers in Yardville, NJ at age 16; where she gave birth to a baby boy. The name she gave him was James Michael. My mother is unsure whether his date of birth is 08/15 or 08/16. I was told he was born with a heart defect and was transferred to Hahnemann University Hospital in Philadelphia, PA. It is believed that he underwent heart surgery there. I am looking for any possible information anyone would be willing to share. I would also love some tips to assist in my search.