Should our fine financial system cease functioning cash will become a rare and precious medium. Over the years Americans have exchanged paper currency with confidence. Yet, today everyone's cash is a digital value out of hand. Our vast nationwide cash money market holdings greatly exceed any paper currency supply making any Bank run a momentary event. Should the financial house of cards crash, holders of green back US Dollars will be able to engage in trade. Gold hoarders will not know what to do. Credit cards won't work. Checks won't either. If you can't barter, cash will be king. Get...