De Nieuwsgier, 31 July 1951: in Yogyakarta SOBSI initiates a rival '17 August' committee including trade unions, the youth front, PKI, PSII, Murba, BTI and Gerwis, claiming the city's official committee only wants to 'celebrate' without expressing the people's struggle. It will explore a merger. Another item (Pakistan-
Aneta item in De Vrije Pers (31 Jul 1951): on SOBSI's initiative a "17 August" committee was formed in Yogyakarta with trade unions, Front Pemuda, PKI, PSII, Murba, BTI and Gerwis, as an alternative to the city administration's committee, which SOBSI said would only "celebrate a feast".
De Nieuwsgier, 6 Dec 1952: representatives of 18 parties and organisations in Surabaya, under the PNI, urge the government to clarify whether the 17 October 1952 affair was a coup, to act against all involved and to implement the Sophiaan motion. Gerwis is among the listed attendees (with PKI, PNI, SOBSI, Murba, Wanita
Aneta item in De Vrije Pers (12 Mar 1954): an anti-Swapradja committee conference in Solo rejected any return of self-rule (Swapradja) and planned waves of mass meetings before 15 April. Participants included PNI, PKI, Pemuda Rakyat, Gerwis and SOBSI; also notes the Sunan of Solo's planned studies in Jakarta.