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
FBIS-monitored ANTARA report (27 Oct 1965) on a demonstration by the Action Coordinating Body to Crush the 30 September Movement at the Foreign and Home Affairs departments, demanding dissolution of the PKI and sister organisations, purges of subdistricts and the Labour Ministry, and regretting China's attitude on the
Official institutional history, 'Seperempat Abad DPR RI', compiled by the DPR-GR Secretariat for the 25th anniversary in August 1970; it traces parliament from the KNIP to 1970 with membership rosters. For Gerwani it matters in the 1965-66 chapters: it records the NU demand (5 Oct 1965) to ban Gerwani, the 15 Oct 1965
English edition of the Tempo column 'Umi Sardjono and the Annual Ghost' (4 Oct 2021) arguing that 1965 history is still black and white. It uses Umi Sardjono's life (arrest without trial, Bukit Duri, Plantungan to 1979), Gerwani's Gerwis origins, a mid-1960s membership of 1.5 million, literacy classes, her immigration