I've just been listening to (and very much enjoying) the Alan Lomax recordings - now fully accessible on line)
Most interesting for me personally were the 1950s recordings of Ewan (and occasionally his first wife, Joan Littlewood and his mother, Betsy)
THey are full of information on Ewan when he was more of a 'Salford Lad' than he was later and they certainly give the lie to many of the myths that have sprung up about him
Lomax's contribution to our understanding of Irish and Scots is also well worth a listen
Jim Carroll