https://catalog.usmint.gov/shop/paper-currency/

https://www.uscurrency.gov/educational-materials/classrooms/cash-codebreakers/for-educators

https://www.uscurrency.gov/

https://www.bep.gov/currency/serial-numbers

https://gimp.org

Labtop + Hewlett Packard or Canon Printer Inkjets + with Open Source Software

https://www.usa.canon.com/

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