Researchers in Oklahoma are studying the former winterquarters of Hagen Bros Circus in Edmund, Oklahoma.
http://newsok.com/article/5529362
CIRCUSES / CLYDE BEATTY-COLE BROTHERS CIRCUS: READY TO TAKE TO THE ROAD: Caption reads, Saturday is Clyde Brothers Circus which wintered in Edmond. Photographer UNKNOWN. Original Photo 04/08/1966. Published on O-04-09-66.