Image Quest  

Over two mil­lion images of objects, events, places, works of art, sports, and sci­en­tific pur­suits, from dozens of col­lec­tions such as Getty Images and the National Geo­graphic Soci­ety. Each image includes full cita­tion and copy­right infor­ma­tion. Rights have been cleared for edu­ca­tion use.  (Britannica’s com­pi­la­tion from over 50 of the world’s best collections.)

From  Bobray Bor­de­lon, March 6, 2013