Downloaded September 2012 from:
http://lima.usgs.gov/fullcontinent.php

Downloaded file:
tiff_90pct.zip
Original image file name:
00000-20080319-092059124.tif

For information on user restrictions, please visit
http://www.usgs.gov/laws/info_policies.html

This page is also available offline in this folder, but note that terms might have changed since data download.