Instructions
Look at the front of your bill.
Find the seal with a large letter in it. On the $1 bill, the seal is located to the left of President Washington's picture. On the $10 bill, look to the left of Alexander Hamilton's picture.
Determine which Federal Reserve Bank the letter represents: The code for Boston is A; New York, B; Philadelphia, C; Cleveland, D; Richmond, E; Atlanta, F; Chicago, G; St. Louis, H; Minneapolis, I; Kansas City, J; Dallas, K; and San Francisco, L.
The name of the bank is also written, in very tiny letters, within the black ink of the seal, on the bottom.