A nice little film summarizing the fastest steam locos of all times, with the record going to the British LNER “Mallard” with its 126 mph (203 kmph) in 1938.
Although most of the other locos shown here have been scrapped, the Mallard can still be seen at the National Rail Museum at York.
Naturally, if you are passing that way you should try to visit her.
As I did in 2006:
This old lady was active in exhibition runs until very recently, but may not run again. Other locos of the same A4 class can sometimes be seen on exhibition runs.
In 2006, #9, the “City of Truro” was also hailing excursion trains. I was lucky to travel on one of them.
Another famous resident of the NRM:
As you might guess, this is not the original from 1829 but a working model. This also goes for exhibition runs. The real Rocket is at the Science Museum in London.
These may be of interest:
https://en.wikipedia.org/wiki/National_Railway_Museum#Locomotives
https://en.wikipedia.org/wiki/LNER_Class_A4_4468_Mallard
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