Historic Silver Price Data

I am trying to do some research on Silver. IB only has about 6 years of data using SLV. Does anyone know were I can access 20 or 30 years of daily Silver data?

Thanks,
Ron

 

Found the good data at http://www.kitco.com/charts/historicalsilver.html

So problem solved.

Tanks

 

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barchart.com
goes back to 1988[candle charts also]

 

Thank you........