Who are these people?

races

This was posted in a group on Facebook. The person who posted said:

This mysterious picture was with my Grandmother’s photo collection.. There is no identifying information written on the back, but I am wondering whether it might have been some contest that was held at the Manson Fairground. I know they had foot races, horse races, and other contests in the early 1900s. It appears to be some kind of human-powered pulling contest. Or perhaps they are just horsing around, in the absence of horses! I am hoping that some of you might have seen it somewhere and can help put names with faces. I’m almost certain it was taken around Manson, since grandma had it in her collection.

So it may have been taken in Calhoun County. If you have any ideas on who the people are or where the photo was taken, please email webcoiagenies@gmail.com and put “Race photo” in the subject line.