This is one of five Class SC-4 Consolidation type (2-8-0) locomotives built at Alco's Pittsburgh, PA, shops in 1910
for the Lake Superior & Ishpeming Railroad (#9-#13). Originally numbered #12, in 1923, the engines were renumbered #16-#20 and redesignated as Class SD-4, #12 becoming #19.
#19 weighs 189,360 lbs, 168,000 lbs on its 56" drivers. A coal burner with 22" x 28" cylinders, it operated at a boiler pressure of 200 psi delivering 42,000 lbs tractive effort.
In 1963, the Lake Superior & Ishpeming sold three of its Consolidations including #19 to the Marquette & Huron Mountain tourist railroad that operated on the recently abandoned Big Bay branch line from Presque Isle Depot in Marquette to Big Bay Depot in Big Bay, MI.
#19 was sold to the scrap merchant Ishpeming Steel Company in Marquette, MI, in 1985, and then on to the Harvey Group for display at the MGM Grand Hotel in Las Vegas as Grand Canyon Railway #19. It was finally sold to the City of Frisco, TX, in 2004 and is now on display on a short section of track adjacent to the Frisco Heritage Museum, where it has been liveried as SLSF #19.