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
Algemeen Handelsblad (1965-10-09), concluding part of 'Backgrounds of the rebellion in Djakarta': surveys PKI under Aidit, PNI infiltration (including its women's movement), PKI campaign against village ulama, the banned BPS and the army's rising role under Nasution. Names S.K. Trimurti as wife of Sajuti Melik and chai
Stewart K. Sutley's MA thesis (Political Science, McGill, 1988) applies Tilly and Aya's 'political conflict' model to the PKI-Army struggle of 1949-65, arguing the PKI's state-within-a-state depended on Sukarno and was destroyed after the army struck at the president. Gerwani is treated only as the PKI's 'women's front