I am still searching for this programme:

"A CELLAR FULL OF FOLK', with Leroy van Dyke; The HALLIARD; CLIFF AUNGIER sings & introduces on record, PETER, Paul, AND Mary. Produced by Ian Grant. Light programme, Saturday 4 March, 1967, 17.31"(© BBC Genome).

The programme was lost in the BBC's 'Great Delete'. It was The Halliard's first radio broadcast. I have tracked down, with much help from some dedicated individuals, every other programme that featured The Halliard with the exception of the above.

                                     Nigel Paterson (Mandolin, The Halliard).