Chuck,
You do know that we have been in a Fiat monetary system since Nixon, right????
fiat money
Definition
Money which has no intrinsic value and cannot be redeemed for specie or any commodity, but is made legal tender through government decree. All modern paper currencies are fiat money, as are most modern coins. The value of fiat money depends on the strength of the issuing country's economy. Inflation results when a government issues too much fiat money.
We used to be on a 'standard'
The Bretton Woods System, enacted in 1946 created a system of fixed exchange rates that allowed governments to sell their gold to the United States treasury at the price of $35/ounce. "The Bretton Woods system ended on August 15, 1971, when President Richard Nixon ended trading of gold at the fixed price of $35/ounce. At that point for the first time in history, formal links between the major world currencies and real commodities were severed". The gold standard has not been used in any major economy since that time.
Before that we were on a real Gold/Silver Standard system.
If you would like to learn about the history of money in detail, there is an excellent site called A Comparative Chronology of Money which details the important places and dates in monetary history. During most of the 1800s the United States was had a bimetallic system of money, however it was essentially on a gold standard as very little silver was traded. A true gold standard came to fruition in 1900 with the passage of the Gold Standard Act. The gold standard effectively came to an end in 1933 when President Franklin D. Roosevelt outlawed private gold ownership (except for the purposes of jewelery)
For your reference
http://economics.about.com/cs/money/a/gold_standard.htm
And Yes - I do think it is relevant considering all the 'stimulus' going on.