Photos of vehicles from the early days of motoring built specifically to deal with adverse winter conditions are always interesting. Above is a prototype driving system fitted to a Model “T” Ford in 1918 by Charles H. Martin of Springfield, Massachusetts to test the idea for a proposed light tank.
Below are mailman in Colorado using Model "T" Ford Snowmobiles. See and learn more about them @ http://theoldmotor.com/?p=111753
This is a a Fordson tractor with a "Snow-Motor" conversion. See and learn more about them including rare film footage of one in action @ http://theoldmotor.com/?p=111753
Sorry, but your "Colorado" photo was actually taken in Cokato, Minnesota in front of the Cokato Enterprise newspaper building.
The snowmobile on the far left was originally owned by Cokato mailman Carl Peikert and survives to this day; it was donated to the the Cokato Historical Society/Cokato Museum in 1994. Refer to the 2007 article and the photo below.
I am familiar with the period photo as well as the surviving snowmobile. Some side notes: Carl Peikert's grandson was a college classmate of mine. My 1917 roadster was originally from Cokato. My neighbor's father was the editor of the Cokato Enterprise for many years.
Thanks, A helper that wrote the post lost the link to the ID.
That is the surviving machine above?
Yes, that is the surviving machine.