I have seen quite a few Successful Farming magazines and advertisements so it is a bit surprising more groups haven't been found. I know there have been other groups of cards (with M101-4/5 backs) found, such as the Indianapolis Brewing, Everybody's and Holmes to Homes, but never any larger groups of these. I always say I think there is still a ton of stuff yet to be found. Maybe a/some of these groups will surface yet....Successful Farming did lots of marketing to sell their magazines.....best regards