Jordan: Is your set an MTH set (which is a reproduction) or an original 1930's Leland Detroit set? The fact that there is a power car and 3 trailers suggests an original, as the MTH repros only came with 2 trailers and extras were not available. I believe the originals did have 3 trailers. If you have an original, it could be quite valuable, depending on condition. It would help if you could post a photo. I will be seeing an MTH set in our museum later today and I will check to see where the MTH markings are. Here's a link to the MTH website with info on the repro monorail. The page in the link is the conventional version but it also came with PS/2.