Need help

I am trying to locate a magazine article doing an interview with my grandfather. My grandfather corraled and herded on horseback some or all of the horses used during the filming of the movie how the West was won. Sometime after that someone from Time magazine or a horseman's magazine did it an interview with him to write a article and I could really use some help on finding that article I don't want to talk to my grandpa though how do I go about getting help finding the article? Any help would be appreciated any advice would be appreciated