I was wondering what kind of foreign power ran on the L&HR? I know the CNJ had track rights up to Belvidere NJ from Easton, the Reading ran a train right to Bridgeport CT, and the Pennsylvania Railroad ran freight over the line to Maybrook which is fine and good, but the question is what kind of engines were documented and seen on that line. And if there is any information on cabooses or hacks that followed. I always wondered if New Haven power was ever borrowed or leased and ran on that line to Allentown? In matter of fact, who else did the LHR leased for power from other railroads?
Check out this topic:
http://railroad.net/forums/viewtopic.php?f=88&t=43156
The "usual" foreign power seen on the L&HR was CNJ, RDG, PRR, PC, and DL&W. The topic linked above discusses how the foreign locos got on L&H rails.