Tages-Anzeiger analysis (11 July 1959, signed Th. v. R.) of Sukarno's return to the 1945 constitution and the army's rising power under Nasution. Lists PKI-linked mass organisations, giving Gerwani 75,000 members alongside SOBSI, Pemuda Rakyat, BTI, and notes PKI's 1957 vote.
CIA Current Intelligence Weekly Summary, 12 Nov 1959, a long multi-topic report; the Indonesia part (pp.23-27) assesses PKI strength (Aidit's claim of 1.5 million members, Java as base, army and Sukarno restrictions, Aidit's 1959 Moscow and Peking trip). It names GERWANI as the PKI's women's front, alongside Pemuda Rak
Pohlman (2017) chapter on how women whose husbands were killed or detained in 1965-66 secured daily survival for decades under ET stamps and boycotts, with case studies including Ibu Arum, a plantation labourer. Women's post-violence survival.