US Consulate Medan telegram 509, 7-8 June 1965: the military used Dwikora authority to overrule the governor over banning the newspaper Tjahaja, called a clear Army win. Pre-coup Army-PKI rivalry in North Sumatra; no Gerwani content.
US Consulate Medan telegram, 6 December 1965: after the PKI's 'virtual destruction' in Sumatra the Army extends control over civil service, press, youth, National Front and Hansip. Shows the institutional consolidation that followed the killings.
Berita Harian feature of 24 Feb 1987 by I.A. Makmur Makka on the press then and now, tied to Indonesia's National Press Day and the PWI anniversary at Hotel Indonesia. Only the lead snippet was retrieved; it does not name S.K. Trimurti, and the sweep's Trimurti match is unverified. Little direct Gerwani relevance.