This shot of North Western 150 crossing the bridge at Greenfield station on its way to Scarborough was taken by the late Bob Mack. Despite my best efforts I have been unable to trace who the current copyright holder is, partly because his large collection was widely dispersed.
150 was a Harrington Grenadier-bodied Leyland Leopard L2T, one of two new in 1964.
From a photograph in the David Beilby collection, photographer unknown.