I have Georgy Barnwell and all the rest dubbed from the original vinyl (which was on the point of wearing out) but didn't think, in those days, of preserving all the notes so don't know where the tune came from.

Sweet Thames Flow Softly, the follow-up Argo LP, has been reissued on CD but A Merry Progress To London has not yet (unless I've missed it).

Why not ask Sandra Kerr direct?