Not a snowblower, but it is a fun piece of OPE. The tractor mounted unit was called the Fordson
Snow Devil.11 minute video, rather impressive, but I don't think you could run a blower on the front of it without ruining the drive on paved surfaces.
http://forum.treasurenet.com/index.php/topic,213971.0/topicseen.html
Who the hell let all the morning people run things?