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
Per Olov Jansson Per Olov Jansson Per Olov Jansson (born 22 April 1920 Helsinki, Finland) is a Finnish photographer. He is the son of artists Viktor Jansson and Swedish-born Signe Hammarsten-Jansson, and the brother of writer Tove Jansson and cartoonist Lars Jansson. His photography has appeared in books by Tove Jansson, including "Skurken i muminhuset" (1980) and "Anteckningar från en ö" (1993), and Tove's 1971 novel, "Lyssnerskan" is dedicated to him. He is also responsible for a great number of photos of his sister. Jansson's photographs have been described as emphasizing the act of artistic creation and his technique has been noted to