<DIV>The histories behind some of Caterpillar's largest earthmovers ever are detailed in this new photo archive. Beginning with the Diesel 75, the great-grandfather of the D8, the collection follows the various changes made to the latter model up until 1966. More than 120 factory photographs dramatically illustrate the effects that rapid-moving technology had on those early years of mass dirt-moving. In addition, several photos depict World War II-vintage photos and artwork, as well as attachments and equipment manufactured by Caterpillar and others for use with the D8.