Kelleran Holman
if you swap out the first letter of that # on the back of your BC with one of the 12 routing #s of the fed, checking against a credit card validation checker....you will find a 'valid account" every time... same with the # on the statement of live birth, some will produce the issuing bank...but the fact that the "letter" doesn't always correspond with the bank it represents ie "A"=Boston fed res" makes proving anything beyond coincidence tough, but it is interesting just the same...i'm sure there is a mathematical formula that I am misunderstanding...but EVERY time I have hit a "valid" number...
Printed copy · Anthology Volume 5, page 617
