Speaking of Alex Campbell, Bert Jansch does a nice version of 'Been On The Road' and Alex wrote another great song called 'My Old Gibson Guitar' e.g of the lyrics:

Well I've worked all over this country
An i've even worked in the bars
But i like best to sing ye ma folk songs
And play my old gibson guitar

John Renbourne does a splendid job of 'National Seven' on one of his early LP's too and then there's Berties great vesion of 'Strollin Down The Highway'.