On September 19, in the year 1900, Butch Cassidy and the Sundance Kid committed their first robbery together, taking $32,640 from the First National Bank of Winnemucca, Nevada.

Butch Cassidy, born Robert LeRoy Parker, was a notorious train and bank robber and leader of the Hole in the Wall Gang.  The Sundance Kid, born Harry Longabaugh, earned his nickname after spending time in prison in Sundance, Wyoming.  Together they formed the Wild Bunch Gang, which reportedly committed the longest string of successful bank robberies in American history.

The Wild Bunch Gang was for a time best known for their lack of violence during the course of their bank and train robberies, relying heavily on intimidation and coerced negotiation. In reality, multiple individuals were killed by members of the gang, including at least five law enforcement officers.

Neither Butch Cassidy nor the Sundance Kid were ever arrested for the robberies and homicides they committed together.  The circumstances surrounding their deaths are not known for certain.  One theory is that both Butch and Sundance were killed by soldiers in Bolivia in November 1908.  There is some evidence, however,  that one or both returned to the United States and died decades later.