Might I suggest the Saskatchewan Archives for information on the 1950 Eston Ramblers. The site is a little quirky, I would not "search the website", but if you go to "search our collection", then query "Eston Ramblers" a few items come up including 6 images of the '51 Ramblers taken June 22. Also seems to be a couple interviews with "Merle Byrnes and Mr. Mitchell" but this may be about the Eston Ramblers Senior Baseball League team in the 1970's.

http://www.saskarchives.com/

Regional archives are always a great resource. Chances are if you contact them with something as specific as 1950 Eston Ramblers they'll be able to help you out, or point you in the right direction. Good luck on the research.