Dear Ms. Bates,
Thank you for posting your request on History Hub!
We suggest that you contact the Pennsylvania Clerk of Court of the county in which the adoption was recorded or review the Pennsylvania Department Health’s Information for an Individual Who is Adopted web page. Also you may wish to review the FamilySearch Research wiki for Pennsylvania Adoption Research.
We hope this is helpful. Best of luck with your research!
Adoptions are handled by local (for large cities) or county courts.