Index or summary of State Quarter and/or ATB errors?

My error-collecting friends on CT:

I'm not into errors the way most of you are, but I have been putting aside State Quarters and ATB quarters for quite awhile. My intention was to go through them looking for errors before putting them back into the wild. Every so often I read about an error I wasn't aware of.

Is there an index or summary of quarter errors that is your go-to reference?

Thanks,
Steve

 

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There are plenty of written and on-line articles
about the die varieties on State/Park Quarters,
but there is no single 'master list' that I'm aware
of that covers all years and issues.

 

Here are the sites I use.
http://doubleddie.com/228401.html
http://varietyvista.com/index.htm
Hopefully these will help.

 

The same is true for errors. The category is just too broad. ~ Chris