I don't know how this query ended up in the Model Railroading forum, it would be better off in the "Fallen Flags" section under the Baltimore & Ohio heading. The B&O purchased the BR&P in 1932.
There is a Buffalo, Rochester & Pittsburgh Facebook page. You might also try an Internet search for the Salamanca (NY) Railroad Museum (I believe they have a Facebook page as well). I've seen a number of vintage, and interesting, BR&P photos on Facebook.
In the event you already have a Facebook account, here's the link: https://www.facebook.com/#!/BRandPfanpage/?fref=ts
Art Audley, AA3RT
Moderator: Railroad Radio & Communications, Railroads in Books, Magazines, Music, TV and other Media, General Discussion: Fallen Trolley & Interurban Lines, General Discussion: Shortline, Industrial & Military Railroads,