GWR Prairies, Moguls and 56/66XX series engines

I have often commented on my recollections of these 

very fine engines both in the South West and in South

Wales where I spent a good deal of my childhood

here the 56 and 66XX series now thankfully preserved

at Minehead on the West Somerset Railway

In my day they were a good deal grimier and here

we see them at Swansea shed

The Priarie's and the Moguls were the general 

workhorses of the GWR