ESC 1970 07 - United Kingdom - Mary Hopkin - Knock, Knock, Who's There?
UK New Entry 1970 (197) Mary Hopkin - Think About Your Children
UK New Entry 1970 (60) Mary Hopkin - Knock, Knock Who's There?
1970 UK: Mary Hopkin - Knock Knock Who's There (2nd place at Eurovision Song Contest in Amsterdam)
UK New Entry 1970 (20) Mary Hopkin - Temma Harbour
Mary Hopkin ~ Knock Knock Who's There 1970
UK New Entry 1971 (136) Mary Hopkin - Let My Name Be Sorrow
Mary Hopkin - 'Knock Knock Who's There' - Mono to Stereo Conversion
Top Ten UK Eurovision Song Contest Entries: #9 'Knock Knock Who's There' (Mary Hopkin)
1970 Mary Hopkin - Knock, Knock Who's There?
1970 HITS ARCHIVE: Temma Harbour - Mary Hopkin (mono 45)
Mary Hopkin - Knock Knock Who's There (Stereo Mix)
UK New Entry 1970 (70) The Who - The Seeker
UK New Entry 1969 (63) Mary Hopkin - Goodbye
Knock, Knock, Who's There MARY HOPKIN
UK New Entry 1970 (209) Peter Noone & Herman's Hermits - Lady Barbara
UK New Entry 1970 (71) Clodagh Rodgers - Everybody Go Home The Party's Over
Mary Hopkin : Knock Knock Who's There
Mary Hopkin - Knock, Knock Who's There