Merdeka, 25 April 1951: May Day 1951 preparations
Merdeka, 25 April 1951 (hlm. 2): plans for May Day 1951 by a central committee (SOBSI, KABM) assisted by the Peace Defence Committee, Lekra, Pemuda Rakyat, Sakti and Gerwis, framed as defence of world peace.
Abadi, 8 August 1951, p. 2: The Left's 17 August Committee
Abadi, 8 Aug 1951, p. 2: separate left-wing 17 August committees under a 'peace programme' in Jakarta and Bandung, with Gerwis, SOBSI, Lekra and others in charge of the programme.
Abadi, 4 February 1952, p. 2: World Youth Solidarity Day Committee
Abadi, 4 Feb 1952, p. 2: provisional committee including Gerwis, Lekra and Pemuda Rakjat to celebrate 21 February 1952 world youth solidarity day.