Through his introduction to his simple-to-operate roll-film Kodak camera, George Eastman made photography accessible to virtually all people. He built the Eastman Kodak Company into the world’s largest photographic manufacturing establishment by dominating world markets and by pioneering in organized industrial research and development.

Source: Jenkins, Reese V. "George Eastman." Salem Press Biographical Encyclopedia, January. EBSCOhost, libraries.maine.edu/mainedatabases/authmaine.asp?url=http://search.ebscohost.com/login.aspx?direct=true&AuthType=cookie,ip,uid&db=ers&AN=88828481&site=eds-live