X Minus One - Project Mastodon (#54) 

06/05/56, episode 54
This episode provided by the Old Time Radio Researchers Group
www.otrr.org
Another good story where a group of time travelers want to go back in time to set up a colony in prehistoric times. Kind of like wishing you had bought Microsoft stock when it was at 5. (from "The Critical X Minus One" by Jim Fanisher)
Credits (Goldin): William Welch (producer), Richard Hamilton, Raymond Edward Johnson, Joseph Julian, Bob Hastings, Floyd Mack, Ernest Kinoy (adaptor), Frank Maxwell, John Larkin, Charles Penman, Daniel Sutter (director), Clifford Simak (author), Jerry Damon (announcer)