LNER Class A4
The Class A4 is a class of streamlined 4-6-2 steam locomotive designed by Nigel Gresley for the London and North Eastern Railway in 1935. Their streamlined design gave them high-speed capability as well as making them instantly recognisable, and one of the class, 4468 "Mallard", holds the world record as the fastest steam locomotive. Thirty-five of the class were built to haul express passenger trains on the East Coast Main Line route from London Kings Cross via York to Newcastle, and later via Newcastle to Edinburgh, Scotland. They remained in service on the East Coast Main Line until the early 1960s when they were replaced by Deltic diesel locomotives. Several A4s saw out their remaining days until 1966 in Scotland, particularly on the Aberdeen - Glasgow express trains, for which they were used to improve the timing from 3.5 to 3 hours.
San Francisco and San Jose Railroad
The first full-sized steam locomotive produced in the state of California was built for the SF&SJ by the Union Iron Works in San Francisco. It was appropriately named the "California". Its inaugural run was August 30, 1865, during which it set a speed record of . Union Iron works also built a similar 28-ton locomotive number 7 and the 18-ton switcher number 8 in 1865. Norris built two more SF&SJ locomotives weighing 26 tons and 28 tons in 1867, while McKay and Aldus of Boston built two 30-ton locomotives. Rhode Island Locomotive Works built a 30-ton locomotive for SF&SJ in 1868, as did Cooke; and Schenectady Locomotive Works built two more. 1870 brought another 30-ton locomotive from Mason and two 33-ton locomotives from Cooke.