This couldnt have been chessman as it was the same year he was exicuted but was a attempted copy cat. 1960 I worked in yosemite NP. My good friend and boss, clyde "montanna" folley came back from his days off with quite a story. He went down to I think modesto or one of those towns to see a girl friend. He was driveing by himself on a lonely highway and was pulled over by a unmarked with a red light. He said he wasnt speeding and a guy not in uniform walked up. Clyde said wheres your authority? Guy pulled his jacket back and showed a revolver he was packing and said right here! A car was approaching and clyde noticed the guy was waiting for the car to go by. Clyde scratched out. The guy chased him many miles but dropped back when clyde pulled into a small town. I wish clyde could have got his hands on him. He was one of the strongest most fit guy I knew.