In case you missed it, the US Chamber of Commerce has a Guide and Checklist for the Emergency Loans for Small Business and the CARES ACT.
Once you determine your eligibility, use the direction of the SBA to determine where you should apply.
Where can I apply? You can apply through any existing SBA lender or through any federally insured depository institution, federally insured credit union, and Farm Credit System institution that is participating. Other regulated lenders will be available to make these loans once they are approved and enrolled in the program. You should consult with your local lender as to whether it is participating. Visit www.sba.gov for a list of SBA lenders.
SBA Eastern PA Loan Volume report shows active 7a lenders https://www.sba.gov/node/1649801
SBA Eastern PA Resource Guide – don’t just look at your local county, look at entire list starting on page 28/29: https://www.sba.gov/sites/default/files/files/resourceguide_3141.pdf.