Prepare to be Amazed - Part 3

On the face of a dollar, what does the letter inside the circular seal mean?

The black seal with the big letter in the middle signifies the Federal Reserve bank that placed the order for the bill.

A = Boston
B = New York City
C = Philadelphia
D = Cleveland
E = Richmond, Va.
F = Atlanta
G = Chicago
H = St. Louis
I = Minneapolis
J = Kansas City
K = Dallas
L = San Francisco.

The letter also corresponds to the black number that is repeated four times on the face of the bill. For example, if you have a bill from Dallas with the letter K, then the number on the bill will be 11 because K is the eleventh letter in the alphabet.