Lesley, I have all issues of JFSS and JEFDSS, and there are lots of songs there that the first verse or more was collected with the tune from a singer, but the song was completed from a broadside or songbook copy of the text. This is not the case in 'The Greig-Duncan Folk song Collection', although Greig in his articles in 'Folk-Song of the North-East' did collate texts in order to jog the memory of potential contributors.