series of Frisco locomotives not surviving were Frisco 4300s and 4400s. These were all 4-8-2 units assembled by Frisco itself in the late 1930s to the early 1940s from other locomotives. Eleven, being units 4300 through 4310, were built in 1936 and 1937 from used 2-10-2 parts. They had 27 x 30 cylinders, 70″ drivers, a boiler pressure of 250 psi, and a tractive effort of 66,400 lbs, weighing 431,110 pounds. Another twenty-three 4-8-2s were built using the boilers from 2-10-2s between 1939 and 1942. Units 4400 through 4412 were oil-burning, while units 4413 through 4422 burned coal. These locomotives had 29 x 32 cylinders, 70″ drivers, a boiler pressure of 210 psi, and a tractive effort of 68,600 lbs. Weighing in at 449,760 pounds, they were the heaviest Mountain-type locomotives ever built. Dieselization Frisco’s first acquisition of diesel locomotives came in November 1941, when the line received five Baldwin VO-1000 switchers of a thousand-horsepower each. Frisco started a serious dieselization program in 1947, which took about five years. When the period of steam power ended for Frisco in February, 1952 with the last run of steam engine 4018, the Frisco’s diesel fleet included seventeen 2,250-HP passenger, six 2,000-HP passenger, twelve 1,500-HP combination freight and passenger, one hundred and twenty-three 1,500-HP freight, one hundred and thirty-three 1,500-HP general purpose, eleven 1,000-HP general purpose, and one hundred and five yard-switcher units, for a total of 407 diesel locomotives. At that time, the Frisco became the largest Class I railroad in the U.S. to be operating strictly with diesel power. The Frisco gave names to its 2000-series diesel passenger locomotives, EMD E7 and (mostly) EMD E8 units, using the theme of famous horses. These included racehorses such as Gallant Fox (#2011), Sea Biscuit (#2013), and Citation (#2016). However, other horses also made the list: for instance, when #2022 was rebuilt after a wreck, it was given the name of Champion, after ex-Frisco-employee Gene Autry’s trusty steed in the movies. Frisco Silver Dollar Line The amusement park Silver Dollar City in Branson, Missouri, runs multiple diesel-fired or heating oil-fired steam trains around the park on its 2-foot-gauge rail line, known as the Frisco Silver Dollar Line. The Frisco operated in that part of the country, and supplied construction help to the Park, along with the rails and ties, back when this line was being built in 1962. Perhaps for these reasons, the trains