Just found the website. Modeling (for many years) the SP. An imagined line in HO, (Indio Central) operating in California’s Imperial Valley, interchanging with the the SP Yuma sub (and UP & SF) in the 1958 time period. Nothing too specific. Dad was a brakeman on the Pennsy, uncle was a SP freight conductor (El Paso to Lordsburg) when the ACs were king and the F-7s wore black paint. However, a question. Athearn produced a silver SP boxcar marked “Overnight Service”. Did these run in dedicated freights or did they have the running gear to be part of passenger trains?