Nancy,
 
This might be of help.  Go to the following website, and scroll down  until 
you reach the 404 section (volunteer records).  
_http://www.usgs.gov/usgs-manual/schedule/432-1-s1/ch400.html_ 
(http://www.usgs.gov/usgs-manual/schedule/432-1-s1/ch400.html) 
 
Regards,
Gerry

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