Reply #217: There were no United States Notes issued in the denomination of $20

[Spider Jerusalem]

or $10, for that matter. Again you don't know what you're talking about. No currency called "Treasury Notes" has ever been issued by the US government; treasury notes have been issued, as debt instruments, but not as currency.

Edit: see also here. http://www.publiceye.org/conspire/flaherty/flaherty9.html