This photo JUST surfaced in a folder of photos at the Md. Rail Heritage Library. I'm not sure whether to just append it to his obituary thread or start a new one, so I'll do both.

The plow is seen here on a public display of some sort, possibly the 1940 World's Fair (note the steps to the left leading into the cab). Photographer unknown, from the collection of Leonard W. Rice via the late Lee Rogers, Md. Rail Heritage Library collection.

From Steamtown 's website, with annotations by me: Built at Cooke Locomotive and Machine Works, Paterson, NJ November 1898 with builder's number 55. Present tender is a Pennsylvania Railroad tender that replaced the original wood-frame tender after 1940. Number 193 was retired in 1965. The plow was purchased by [Ron Ziel] in 1968, and sold to the Steamtown Foundation in 1988. It remained at [the Black River & Western RR] in New Jersey from 1968 until Conrail moved the rotary plow to Steamtown NHS in July 1993. Only surviving steam rotary snowplow known to have been used on railroads east of the Mississippi.

The tender in this photograph is not the tender preserved with the 193 today, giving some credence to the theory that this display is pre-1940 and also close to New York.

That was taken at the 1939/40 Worlds Fair, as it was on display. This was after they converted it to steel sided, but not the tender yet.