There's a lot of that equipment in mass, ny, etc. From Pawling, NY and up on route 22, i see a lot of FWD's with big wings plows and a few old v plows. Catamount Ski Resort has a few used FWD's they use and the Town of Amenia, NY has some FWD's sitting at their yard rotting away.
There's a group on AOL for people who collect heavy duty snow removal equipment. Oshkosh Group On the page there are a lot of photos of FWD's, Walters, Oshkosh, etc. Here's another page w/ pictures of walter snowfighters- Mark Redman Photos
Not many people on this forum (if any) use big snow removal equipment. Temco (from mass) has a Mack RD spreader/plow truck, and an industrial park near him uses walter plow trucks and a sicard snowblower to keep it open.