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Dan Andersson (6 April 1888 in Ludvika – 16 September 1920 in Stockholm) was a Swedish author, poet, and composer. A nom de plume he sometimes used was Black Jim. Although he is counted among the Swedish proletarian authors, his works are not limited to that genre.
https://en.wikipedia.org/wiki/Dan_Andersson
http://runeberg.org/authors/danander.html