De Locomotief, 27 July 1953: a Palembang delegation (PIR, PNI, PKI) flies to Jakarta with a statement signed by six parties and 22 organisations including SOBSI, BTI, Pemuda Rakjat and Gerwis. It demands early elections, anti-corruption action, settlement of the Tanjung Morawa affair and a democratic cabinet without Ma
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.
Moscow News (English), 30 May 1956, p. 5. Among general items (Afghan independence day, Anglo-Soviet and trade comment), a short piece reports a delegation of Indonesian women arriving in Moscow at the invitation of the Central Council of Trade Unions, led by Setiati Surasto, secretary of the plantation workers' union,
PhD dissertation (Yale, 1967) by R. William Liddle, a political-science study of local parties and political integration in Simalungun regency and Pematangsiantar, North Sumatra, based on 1963-64 fieldwork. Gerwani appears in a few brief passages in ch. VI: listed among PKI mass organizations (p. 190), given no members