For me the crowning glory of steam engines are the Showman's Engines that were once commonplace at the travelling fairgrounds. Beauty and the Beast all rolled into one.
More images can be found HERE [petermcguirephotography.zenfolio.com]
1925 Burrell Special Scenic Showman's Road Locomotive - Ex-Mayor
1907 Burrell Showman's Road Locomotive - Lord Nelson
1915 Garrett 4CD Showman's Tractor - Princess Mary
1919 Garrett Showman's Tractor - Queen of Great Britain
Endeavour
beautiful ... ! ;o)