Amy Bartlett Wright has contributed to the Peterson Field Guide series, and her illustrations have been exhibited at the Smithsonian's Ripley Center. ROGER TORY PETERSON, one of the world's greatest naturalists, received every major award for ornithology, natural science, and conservation as well as numerous honorary degrees, medals, and citations, including the Presidential Medal of Freedom. The Peterson Identification System has been called the greatest invention since binoculars.