This article is from the Paper Money Collecting FAQ, by Bruce Giese giesewpm@tiac.net with numerous contributions by others.
The currently circulating US paper notes are Federal
Reserve Notes. The Federal Reserve Banks which control
their issue were created in 1913 by the Federal Reserve
Act of that year.
Here's a list of the 12 Federal Reserve Banks, including
their associated letter (found inside a circle on Federal
Reserve Notes) and associated number (also found on Federal
Reserve Notes):
1 A Boston
2 B New York
3 C Philadelphia
4 D Cleveland
5 E Richmond
6 F Atlanta
7 G Chicago
8 H St. Louis
9 I Minneapolis
10 J Kansas City
11 K Dallas (Note: the 11 and K have nothing to do with JFK's death)
12 L San Francisco
 
Continue to: