Lena Marie Landström (born 12 July 1943) is a Swedish children's writer and illustrator. She was a joint recipient of the Astrid Lindgren Prize in 2009, with her husband and frequent collaborator Olof Landström. She studied fashion at Anders Beckman's School of Design, 1966–1969. In 1969, she met her future husband Olof Landström, with whom she also collaborated. In the early 1970s, at the film company POJ, Lena Landström participated in the script work for the animated TV series Kalles klätterträd together with Peter Cohen and Olof Landström.
https://en.wikipedia.org/wiki/Lena_Landstr%C3%B6m