In reply to Cumbrian Climber:
I believe that, a while back, John Appleby, who does the Footless Crow website (and is on Facebook), received a trove of historical material (writing, photos, etc) from Maureen Drasdo, wife of the late Harold Drasdo. There may have been Bradford Lads photos in it - and possibly one of Don Hopkin. A bit of a long shot, I know, but, in any case, John will be sympathetic towards what you're doing and may have other ideas also.
Good luck with it!
Mick