St. Louis–San Francisco Railway (reporting mark SLSF, also known as the "Frisco") locomotive 4500 is a 4-8-4 Northern type steam engine.

4500 was built as an oil-burning steam locomotive by Baldwin in 1942 for Frisco passenger service.

4500 was re-painted into Frisco's standard black with gold striping and lettering, and assigned to passenger trains such as the Will Rogers.

But the whole series had 74" drivers, 28 x 31 cylinders, a boiler pressure of 250 psi, and a tractive effort of 71,200 pounds.

4500 was repainted back into the Meteor paint scheme and is on static display for free public viewing at the Route 66 Historical Village at 3770 Southwest Blvd.