AndyPCL, got guess with a team nearer the PCL so I'm going with the Yakima Bears, but the Denver Bears is a great guess.

Later edit I can not find a photo of any Yakima team prior to 1962 wearing any home/away uniform that says "Bears", "Pippins", yes). And before PCL fanatics get on my case, yes the Denver Bears were in the PCL but not until the 1960's