Janet and Anne Grahame Johnstone

Janet Johnstone (1 June 1928 – 20 January 1979) and Anne Grahame Johnstone (1 June 1928 – 25 May 1998) were English twin sisters and children's book illustrators best known for their delicate, detailed prolific artwork and for illustrating Dodie Smith's classic book ''The Hundred and One Dalmatians''. Provided by Wikipedia