On this day: October 4

POSTED: 06:01 PM MDT Oct 03, 2012    UPDATED: 12:00 AM MDT Oct 04, 2013 
Janis Joplin file image

Work begins on Mount Rushmore, Sputnik is launched into space, the pope visits America for the first time, Janis Joplin is found dead of an overdose, all on this day.