An unexpected trio

A picture of my Uncle Arth (age 4), Roy Rogers, and my grandfather Irving Klaw backstage at the Madison Square Garden Rodeo in 1944.

I own a copy of this picture. As does Arth. I was unaware that anyone outside my family had a copy. I wonder how they got it?

(Thanks to Arth for the link.)

UPDATE: Arth gave a copy of the picture to Boyd, who publishes Western Clippings. Arth just neglected to tell me that when he sent me the link to the image.