Bibliography
George Buday: The Story of the Christmas Card, 1954, Spring Books, London.
Colin Marshall: When Salvador Dalí Created Christmas Cards That Were Too Avant Garde for Hallmark (1960), in Open Culture, 25 December 2019, When Salvador Dalí Created Christmas Cards That Were Too Avant Garde for Hallmark (1960) | Open Culture (accessed 1 December 2023).
Elena Martinique: Andy Warhol and His Endless Love for Christmas, in Widewalls, 27 December 2021, Andy Warhol and His Endless Love for Christmas | Widewalls (accessed 1 December 2023).