Harian Rakjat, 27 May 1952. Front-page report on the PKI's 32nd anniversary reception, whose opening session was led by Nyonya Mudigdio (photo caption: she chairs the meeting); speakers included Alimin, attacking the MSA aid pact, with greetings from foreign communist parties. Other pages cover the Surabaya PKI recepti
FBIS item (20 Apr 1953): MP Tjugito (OCR) and Suharjo, secretary-general of SABDA, left Jakarta as SOBSI delegates to May Day in Peking. S.K. Trimurti left with the SOBSI delegation and would attend the women's congress in Copenhagen (World Congress of Women). Shows Trimurti's travel in the WIDF circuit.
Bintang Merah special issue, vol. 1: documents of the VI National Congress of the PKI, Jakarta 7-14 September 1959 (Yayasan Pembaruan, 1960). Contains Aidit's opening speech, the Central Committee's General Report, and Programme and Constitution changes. Gerwani is not named; on women it records growing women's members
JPRS translation page (Translations on South and East Asia, no. 66-80, 1964-65, seq 266) listing the committee of SOBSI's Fourth National Congress. The Central Bureau has Moch. Munir as chairman and Mrs Setiati Surasto among the deputy chairmen; Sri Ambar is among the secretaries. Both are women named in the catalogue
Tempo.co explainer (29 Sept 2021) on organisations 'considered affiliated' with the PKI: Gerwani, Lekra, SOBSI, Pemuda Rakjat. It states, citing Wieringa, that Gerwis became Gerwani at its 1954 second congress, electing PKI member Umi Sardjono as chair. Short, background-level.