That enduring legacy is bestowed on the PRR class K4s, 4-6-2 locomotive. The K4s was born out of extreme necessity in 1914, when the PRR belatedly confirmed that they had to break with their limiting phobia about adding one extra set of drive wheels to passenger locomotives. Until that time, management steadfastly believed larger 4-4-0 …
Continue reading “Signature Steam Class on the Standard Railroad of the World”