context: One of the most significant contributors of Garm was Tove Jansson who started her career in the magazine as a cartoonist in 1929 when she was just fifteen.
source: Over time the former became the magazine's chief illustrator.
reference_original: Più avanti, la prima divenne la principale illustratrice della rivista.
reference_flipped: Più avanti, il primo divenne il principale illustratore della rivista.