Casper Petroleum Club

At its height, the club had more than 700 members, but that number has fallen to 323.

Fifteen Casper businessmen founded the club in 1949 to "'aid the industrial and productive interest of the State of Wyoming."

Rock 96.7 celebrates “Yo Momma’s Day” by scouring the city for the #1 “Yo Momma” joke of all time. Dumb, ugly, short, fat, poor, old – any Yo Momma joke goes, we want to hear them all. Submit yours at rock967online.com now through May 1.