Buy A Pound Of Gold -

If you are looking for a "useful paper" in the sense of a financial instrument instead of physical metal, you might be interested in :

While federal law doesn't require you to fill out a report just for owning gold, you will need the following for a transaction of this size: buy a pound of gold

This is a standard anti-money laundering report and does not mean the purchase is illegal. If you are looking for a "useful paper"