moving a big log with a big horse takes a set of big wheels

Developed in the early 1920s, the Best Logging Wheeler’s sheer size made it a giant, with 8-foot wheels mounted on adjustable tapered roller bearings and 12-inch tires

http://www.caterpillar.com/en/company/history/leo/logging.html?utm_source=facebook&utm_campaign=CatProductsAccounts&utm_term=sf48205289&utm_medium=social&utm_content=Forestry&sf48205289=1
https://www.facebook.com/catproducts/

For more on big wheel logging: http://www.blackdiamondnow.net/black-diamond-now/2013/01/logging-with-big-wheels.html

https://forums.aaca.org/topic/341211-period-images-to-relieve-some-of-the-stress/page/632/

the long forgotten lumberjack "Big Wheel" method, manufactured by the Gaylord company in Michigan

 Big Wheels used by Lumber Jacks made by Gaylord MFG Co, also known as Michigan Wheels

I've never seen these before... or even heard of them.

Found on https://www.facebook.com/groups/NorthernMIPhotos/