> I too would like to read the Karl Dallas piece from the March 1991 Folk Roots (my copies only go back to 1996...)

Have just dropped loads of copies Folk Roots on the floor and disturbed the whole census recorded household.
But I did find a copy of Folk Roots No. 94 (April 1991). The article by Karl Dallas is contained therein.
Now I have to figure out how to get you a copy/facsimile or whatever.