De Nieuwsgier, 17 Sept 1953: the Committee to Support Tunisia issues a manifesto backing Tunisia's freedom struggle against French policy, signed by many party leaders and organisations. S.K. Trimurti signs on behalf of Gerwis, with Maria Ulfah Santoso for Kowani and others for PNI, Masjumi, PSI, Parkindo. Shows Gerwis
De Nieuwsgier report (13 Dec 1954, p. 1) on a gathering of "creators of the proclamation" generation of 1945 at the Jakarta mayor's house, attended by D.N. Aidit, Isa Anshary, Mrs. Trimurti (S.K. Trimurti) and others, discussing the external situation. Trimurti appears only in the attendee list.
CIA intelligence survey of the PKI's history, structure and front organisations, May 1955, before the September 1955 elections. Section III.E (report pp. 49-50) profiles Gerwani: founded 1950 as Gerwis, renamed Gerwani at the March 1954 congress, 25,000+ members, S.K. Trimurti general chairman and Umi Sardjono chairman