1860s: Buffalo Bill is a famous showman and western hero in his own time, having created the widely popular Buffalo Bill's Wild West Show.

1960s: John Wayne and Clint Eastwood are actors known for their performances as cowboys in western movies.

Today: Clint Eastwood is still a figure readily identified with westerns, although his career is diverse. Genre blending of science fiction, anime, and westerns is popular.

1860s: Approximately fifty million buffalo (American bison) roam the plains of North America but are being killed in large numbers for their hides and to protect farms and settlements and to remove a source of food from nomadic tribes of Native Americans.

1960s: Buffalo slowly recover from their near extinction in the late 1800s when only twenty-three wild buffalo remained.

Today: The National Bison Association estimates that there are four hundred thousand buffalo in North America.

1860s...