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.
Nieuwe Courant, 4 June 1951: Acheson on Korea and the risk of Soviet intervention, with a short note that about 10,000 children celebrated International Children's Day on Merdeka Square, Jakarta, on a committee including Gerwis, IPPA and Pemuda Rakjat, with 4,000 Chinese youths from eight Chinese schools.
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.
De Waarheid, 31 Aug 1951, p. 3: near-verbatim PKI Central Committee statement on the Sukiman government's August 1951 mass arrests, calling them a drift to fascism and a staged 'coup' pretext. It lists Gerwis among organisations whose members were arrested or searched, demands release of all detainees and urges an anti