Signe Hammarsten-Jansson Hammarsten-Jansson designed over 200 stamps. The couple had three children in total: Tove Jansson, Lars Jansson and Per Olov Jansson. Born to artistic parents, the children grew up in a Bohemian lifestyle, and all became artists in their own right. Tove became a writer and painter and would gain particular fame for her "Moomin" series. Lars became a cartoonist, ultimately becoming responsible for the "Moomin" comic strips as well as a later animated version. Per Olov became a photographer and collaborated with Tove on a few books. The children were directly influenced by their mother's artistic sensibilities and Tove in
Tove Jansson Flood". The next two books, "Comet in Moominland" and "Finn Family Moomintroll", published in 1946 and 1948 respectively, were highly successful in sales, adding to sales of the first book. For her work as a children's writer she received the Hans Christian Andersen Medal in 1966. Starting with the semi-autobiographical "Bildhuggarens dotter" ("Sculptor's Daughter") in 1968, Jansson wrote six novels, including the admired "Sommarboken" ("The Summer Book"), and five books of short stories for adults. Tove Jansson was born in Helsinki, Grand Duchy of Finland, Russian Empire. Her family, part of the Swedish-speaking minority of Finland, was an artistic one: