My favorite railroad is the Northern Pacific. Both of my granddads worked for the NP, one in Yelm and the other in Pasco. Both granddads came from Italy and worked their way west. The NP also had a significant presence here in Tacoma, including a beautiful office building (now on the National Register of Historic Places), rail yards and workshops. In 1970, the NP merged with other lines to form the Burlington Northern (now BNSF).
While it was my favorite railroad, I did not have much equipment until the last few years. My last two acquisitions were 60th birthday gifts to myself: the Lionel NP 4-8-4 Northern #2626 from 1992 and the recently released MTH NP 70 foot smooth side passenger cars. I purchased the 4-8-4 on EBay from a very nice gentleman; the engine was immaculate and worked perfectly. This was a top of the line engine in 1992 (I added scans from the catalog), Charles Ro sold them for $699.95. I have included a picture of the original #2626, which started out as a demo engine for the Timkin Roller Company as #1111, aka, the four aces. During its life on the NP, it did run both freight and passenger service. Sadly, the engine was scrapped in 1958. Had it lived, it probably would be doing excursion runs with the passenger cars similar to what I am running.