The above is from the Association of Cultural Equity's digitised archive of the entire collection of Alan Lomax's tape recordings.
Introduction and search box here -

http://research.culturalequity.org/home-audio.jsp

Ross

PS Steve Gardham - Lloyd, McColl, Henderson and Lomax and others were working away for a good decade before the "folk revival" got kick-started.

http://www.goldilox.co.uk/engfolk/timeline.htm