There is no mention at all of an end date to the federal reserve act ...
http://www.historycentral.com/docume...alreserve.html
It has been suggested that a return to the gold standard is the only thing that could save the American economy, and many financial experts have said if the government decided to rescind the Federal Reserve contract, that they may do it on the 100th anniversary of signing it into law ...
Interestingly enough, the 2013 edition US 100 Dollar Bill seems to suggest the same with it's imagery and wordings .. according to renowned financial analyst Bix Weir:
http://www.roadtoroota.com/public/261.cfm