http://catdir.loc.gov/catdir/enhancements/fy1117/2011038186-b.html
http://catdir.loc.gov/catdir/enhancements/fy1117/2011038186-d.html
http://catdir.loc.gov/catdir/enhancements/fy1117/2011038186-t.html
http://site.ebrary.com/id/10533320