Dear Denise B,
Thank you for posting your question to History Hub!
So I can better answer your question, may I ask if you are you referring to the Hebrew Immigrant Aid Society (HIAS) operating in Philadelphia?
The records of the Hebrew Immigrant Aid Society of Philadelphia are available at Family History Centers, once they reopen. FamilySearch Catalog: Immigrant records, 1884-1952 — FamilySearch.org
The records of the German Immigrant Aid Society (Agentur) of Philadelphia are available at the German Society of Pennsylvania Finding Aids - The German Society of Pennsylvania
finding aid for the records: German Society of Pennsylvania Agentur records, 1847-1947 (upenn.edu)