On Monday, August 15, 2005, at 11:18 PM, James Mischke wrote:

B&O's early covered hoppers were either wagontop design (classes
N-31, N-34), or built by Greenville (classes N-36, N-40, and
N-42).

Did any other railroads buy Greenville covered hoppers of this
specification during this period??

Jim,
P&WV had 25 cars 1925-1949, built 7-48 by GSC that appears to me to be
of the same design as the B&O cars. These are the only ones that I'm
aware of.
Regar,
Ed Hawkins