Indische Courant voor Nederland, 7 Jan 1953, p. 3: year-in-review chronology for 1952 (selected entries translated). Mentions the August 1951 raids, the 17 October 1952 affair, release of East Java arrestees on 30 Oct, a goodwill mission to Kahar Muzakkar under Mrs Salawati (8 Apr), and Aidit and Njoto refused entry to
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
Tempo feature (2 Oct 2021) on how Umi Sardjono led Gerwani: Marx House courses, the 1945 Barisan Buruh Wanita with S.K. Trimurti, Gerwis founded at Semarang (3-6 June 1950, Tris Metty chair), Umi chair from 1954 when it became Gerwani. Cites 650,000 members and 179 kindergartens at the 1957 Solo congress, WIDF links, s