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
Jan-Magnus Jansson to 1987. Jansson has also written several books, for instance about the Finnish Constitution and some poetry works. In 1990s Jansson was against the Finland's membership of European Union which actively threatened the neutrality of Finland's foreign policy . He is buried in the Hietaniemi Cemetery in Helsinki. Jan-Magnus Jansson Jan-Magnus Jansson (24 January 1922 – 29 November 2003) was a Finnish politician (Swedish People's Party). Jansson was a Professor of general state science at the University of Helsinki 1954–74 and chancellor for the Åbo Akademi University 1985 to 1991. He was the chairman of the Swedish People's Party (SPP)