California Digital Library
HEAL, the Health Education Assets Library
Project Gutenberg
http://ails.arc.nasa.gov/ails/?st=1&so=cdate&v=thumbs&o=0&h=1&page=1
]]>Ames Imaging Library System (AILS)
http://ails.arc.nasa.gov/ails/?st=1&so=cdate&v=thumbs&o=0&h=1&page=1
Visible Earth
Digital Library of Wielkopolska