One of his most famous works is the novel Aniara (1956) which in 1959 became an Opera, composed by Karl-Birger Blomdahl.
Links:
http://www.kirjasto.sci.fi/harrymar.htm
... January 1941 by Daniel Mayer[?], member of the French Socialist Party[?]. Later it was lead by a bookshop keeper Pierre Brossolette in Paris. Comité Départemental de ...