England power at Porthmadog. Left to right: 'Welsh Pony' (1867), 'Princess', 'Prince', 'Palmerston' (all 1863). The last two are operational.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/55426027@N03">Peter Trimming</a> from Croydon, England
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/peter-trimming/8719997621/">Steam 150 (Sunday)</a>