2004 Event Clinton Library opens in Little Rock Arkansas, containing 2 million photographs and 80 million documents 1989 Event After 12-year, 4-billion-mile journey, Voyager 2 flies over cloudtops of Neptune and its moon Triton, sending back photographs of swamps 1930 Event Clyde Tombaugh photographs planet Pluto 1914 Event U.S. State Department starts requiring photographs for passports 1863 Event Patent granted for a process of making color photographs
