Here are a few more of my primitive snapshots of Frisco power taken at Lindenwood Yard in St Louis from the yard end of the bridge over I-44. These pictures are all dated March, 1979. Lindenwood was assigned several of the new Frisco EMD SW1500s when they were first obtained in 1968/1969, replacing a bunch of old NW2s and VO powered Baldwin VO-1000s at Lindenwood. The SW1500s were the first new switchers purchased by the Frisco in many years. They were all capable of multiple unit (MU) control, and most often worked yards in pairs. A nice 3000 HP combination. They were also seen in transfer and hump service. Lindenwood was a flat yard, no hump here. The EMD SW1500 was a first class switcher. - SLSF 320 - Working the yard in MU paired with SLSF 322 o SLSF 322 - With its MU paired mate SLSF 320 o SLSF 331 - Working the yard in MU paired with SLSF 332 o SLSF 332 - With its MU paired mate SLSF 331. The yard office is the building you see at the right. Ken