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 Vrije Pers fragment (17 Sep 1953) on trade-union reactions to the Sarbupri plantation workers' strike. It notes that the BTI's second congress, attended by SOBSI, Pemuda Rakyat and Gerwis representatives, declared solidarity with the strike and instructed its branches to support strikers.
Aneta item in De Vrije Pers (13 Feb 1954): nine parties and ten organisations, including PKI, PNI, NU, SOBSI, BTI, Wanita Demokrat, Perwari and Gerwis, met under PNI's R. Kartasasmita and urged the government to dissolve the Greater Jakarta municipal council and form a representative one.
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.
De Vrije Pers report (6 Oct 1954) on founding a Surabaya branch of the Congress Keamanan Rakjat to secure the coming elections, chaired by Pemuda Rakyat's Moh. Rasjad. Ansor objected; SOBSI, Lekra, Gerwani, IPPI and others agreed, and Gerwani Surabaya was elected second treasurer.