Abadi, 31 July 1951, p. 1: Aneta report that SOBSI and left groups including Gerwis formed a separate 17 August committee in Yogyakarta, denouncing the municipal committee as undemocratic.
Abadi, 9 Aug 1951, p. 2: a national 17 August committee separate from the government's, with Gerwis among attendees, adopts the Peace Defence Committee programme; plus a reader's letter on Schacht.
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