Roald Dahl on 13 September is celebrated as "Roald Dahl Day" in Africa, the United Kingdom and Latin America. In honour of Dahl, the Royal Gibraltar Post Office issued a set of four stamps in 2010 featuring Quentin Blake's original illustrations for four of the children's books written by Dahl during his long career; "The BFG", "The Twits", "Charlie and the Chocolate Factory", and "Matilda". A set of six stamps was issued by Royal Mail in 2012, featuring Blake's illustrations for "Charlie and the Chocolate Factory", "The Twits", "The Witches", "Matilda", "Fantastic Mr Fox", and "James and the Giant Peach". Dahl's influence
Ophelia Dahl of Dr. Paul Farmer, a Man Who Would Cure the World", Tracy Kidder's book describing the work of the organization and the life of Dr. Farmer. In December 2006, Ophelia Dahl and Paul Farmer received the Union Medal from Union Theological Seminary in New York. Dahl and the Partners in Health team is featured in the 2017 documentary film, Bending The Arc. Dahl is the daughter of actress Patricia Neal and author Roald Dahl. Dahl contributed to the 2003 book "The Roald Dahl Treasury", a collection of her father's stories, memoirs, letters and poetry, and is currently writing a memoir