At a  meeting of the Geosciences Information Society at the GSA Annual Meeting in Charlotte, NC, in early November, 2012.  This milestone was announced by Richard Huffine, the Library Director of the USGS.   He further said that the Open File Reports is the main series not complete yet.

Here is the link to an information session he gave in August, 2012:  “Information Resources from the U. S.  Geological Survey”:

 http://www.slideshare.net/richardhuffine/usgs-info-resources-gpo-aug-2012