Engine #20 is a 4-4-0 "American" engine that was popular in the early years of railroading. Right behind it is a huge PRR steam locomotive -- it is amazing to note that these both run on the same standard track!
Here is a famous locomotive -- #7002 (actually a sister locomotive re-numbered to 7002) that set a speed record in 1905 at a speed of 127 mph! Can you imagine riding this engine at that speed? This was set during a normal passenger run -- apparently, these powerful engines routinely pulled trains at over 100 mph. Too bad that our trains today don't come close to these speeds routinely!