Christine Hall, « Henry Clarke, 79, Made Klondike Bar Famous, Former Greenwich Resident », Greenwich Daily Voice, (lire en ligne, consulté le )
independent.co.uk
Nicholas Faith, « How ice-cream sales came in from the cold: First it was 'real' beer - now 'real' ices are upsetting the old licking order in the market. Nicholas Faith on an industry in the melting-pot », The Independent, (lire en ligne, consulté le )