On this day: May 10

POSTED: 03:38 PM MDT May 09, 2013    UPDATED: 12:00 AM MDT May 10, 2013 
First Transcontinental Railroad, Golden Spike, 1869

The First Transcontinental Railroad is completed, "Rock Around the Clock" is released, The Incredible Hulk makes his debut, Wilt Chamberlain plays his last game, and Nelson Mandela is inaugurated, all on this day.