One of the locos from the Jack Salem collection,sold at auction in 2012 (see prairie tank 'Drawing Errors' thread) was Harry Powell's 7-1/4" gauge prairie tank,and the loco was in steam at the Rydale Society track some months later. Video clip of the event here: www.youtube.com/watch?v=iQXL2B-4QP8
Built a Tubal Cain 'Trevithick' engine (as the 'Catch Me Who Can' loco).
Building GWR 5101 class tank loco,and a 5" gauge BR Standard Class 2 tender loco.
Planning a 'Large' Metro.