Signe Hammarsten-Jansson that her presence is strongly felt in a number of the books Tove wrote after the death. The melancholic "Sent i November" (1970) deals themes of leaving and loneliness, and is typically considered the most mature of the "Moomin" series. "Sommarboken" (1972) concerns a young girl whose mother has died and her relationship with her grandmother. Hammarsten-Jansson's death marked the end of the "Moomin" series of novels and Jansson's literary output became primarily adult-oriented. Signe Hammarsten-Jansson Signe "Ham" Hammarsten-Jansson (née Hammarsten, 1 June 1882 Hannäs, Sweden - 6 June 1970 Porvoo) was a Swedish graphic artist who designed, among other
Tove Jansson is a work of charm, subtlety and simplicity, describing the summer stay on an island of a young girl and her grandmother. The girl is modelled on her niece, Sophia Jansson; the girl's father on Sophia's father, Lars Jansson; and the grandmother on Tove's mother Signe. Although she became known first and foremost as an author, Tove Jansson considered her careers as author and painter to be of equal importance. She painted her whole life, changing style from the classical impressionism of her youth to the highly abstract modernist style of her later years. Jansson displayed a number of artworks