Discussion relating to the PRR, up to 1968. Visit the PRR Technical & Historical Society for more information.
  by salminkarkku
 
I notice that several old maps show the PRR with two parallel lines between Tryonville and Titusville PA, and two show these extending south to Petroleum Center.

I know that one of the predecessors, "Oil Creek RR" was 6' gauge, so I wonder if this is the reason for the duplication. If so, how far south did the 6'g tracks get?