UK New Entry 1970 (60) Mary Hopkin - Knock, Knock Who's There?
UK New Entry 1970 (197) Mary Hopkin - Think About Your Children
ESC 1970 07 - United Kingdom - Mary Hopkin - Knock, Knock, Who's There?
Mary Hopkin - Knock, knock (who's there) videoclip (UK's Eurovision entry 1970)
UK New Entry 1970 (20) Mary Hopkin - Temma Harbour
UK New Entry 1971 (136) Mary Hopkin - Let My Name Be Sorrow
45 rpm: Mary Hopkin - Think About Your Children - 1970
Top Ten UK Eurovision Song Contest Entries: #9 'Knock Knock Who's There' (Mary Hopkin)
UK New Entry 1970 (142) D. B. M. & T. - Mr. President
Mary Hopkin - ''Knock, Knock Who's There?'' (1970; 7” 45 rpm)
UK New Entry 1970 (11) The Temptations - I Can't Get Next To You
UK New Entry 1970 (174) Des O'Connor - The Tip Of My Fingers
Mary Hopkin - 'Knock Knock Who's There' - Mono to Stereo Conversion
UK New Entry 1970 (91) Butterscotch - Don't You Know (She Said Hello)
Martine Habib Unreleased UK 1970 Demo only Acetate Mary Hopkin, Acid Folk, Apple Record, The Beatles
UK New Entry 1970 (69) The Band - Rag Mama Rag
Mary Hopkin - Knock, Knock Who's There
Knock, Knock, Who's There MARY HOPKIN
UK New Entry 1970 (44) Elvis Presley - Don't Cry Daddy
