This is a SLSF Photo, which has appeared in advertisements and various publications. The photo's cited location has varied with each publication. The earliest-dated publication in which I have seen this photo appear is Railroading the Modern Way by S. Kip Farrington, Jr. , Coward-MCCann, Inc, New York, NY, 1951. The caption indicates that this is 1-32 between Kurn and Lebanon. I am inclined to accept that as the photos location.