What is the farthest anyone received a 40 watt LPRT?

Would anyone have a picture of what the LPRT looked like? I heard years ago that these were installed on telephone poles near CN railroad stations to serve remote areas of Canada. What kind of antenna did they use? How big (size wise) was the transmitter?

I found some information on this online from the DX Listening Digest 7-127 October 22 2007. Basically it started in Vancouver in 1940 in in Revelstoke on 840 KHz with 20 watts. I was curious if anyone has more information, photos and technical aspects of it all...