US Embassy telegram 779A, 18 Oct 1965: Foreign Ministry aide Sutarto says anti-PKI action is spreading across Sumatra, Sulawesi and Central Java, targeting Subandrio. Early-aftermath political context; no Gerwani content.
US Embassy telegram, 30 Nov 1965, recording a Polish diplomat's claim that a PKI Central Committee member was 'elated' on 1 October and that only an Aidit-led 'special group' knew of the plot. Secondhand diplomatic evidence on PKI involvement.
US Embassy Joint Weeka no. 46 (airgram A-373), 7 Dec 1965: Aidit's capture and death, the fate of Politburo members, and a figure of 34,000 PKI prisoners in Java. Context on leadership elimination and detention scale.
US Embassy airgram A-673, 4 May 1966, transmitting an Angkatan Bersendjata article tying China to the 30 September Movement and analysing Army propaganda since October 1965 (shielding Sukarno, blaming PKI and China). Embassy view of the propaganda environment.