Steam engines were the first source of mechanical power invented by mankind and led the way for the industrial revolution.
Science With Me - Learn about Steam Engines
Steam Trains
Heat engines
BBC - History - British History in depth: The Beam Engine Animation
Go Ask Your Father: Trains, Clouds, Supper, and Stars
Steam Engine History
Unlock the secrets of steam locomotives with this comprehensive book covering how they work, including their design, evolution, and construction.
How Steam Locomotives Work
Steam Locomotive Restoration, Overhaul, and Repair Services — FMW Solutions LLC
Steam Engine Education Materials
How A Steam Locomotive Works
Steam Locomotive Engine cutaway. x-post from /r/CutawayPorn [3504 x 2336] : r/MachinePorn
PM at the End of the Steam Locomotive