![Cheyenne Man Gets 20 Years for Largest Known Child Porn Collection in U.S. History](http://townsquare.media/site/99/files/2016/08/RICHARD-PERSON.jpg?w=980&q=75)
Cheyenne Man Gets 20 Years for Largest Known Child Porn Collection in U.S. History
A Cheyenne man previously convicted of sexually assaulting a child is headed back to prison after authorities found a massive collection of child porn on his home computers.