Java-Bode, 15 Aug 1950, p. 1: the RIS parliament adopts the unitary-state draft constitution 90 to 18, and Sukarno proclaims the unitary state. Those voting against included Mrs Mudigdo (Partai Sosialis), Miss Suwarti (Sobsi), PKI MPs, Sakirman, Siauw Giok Tjhan and Murba's Maruto Nitimihardjo.
Java-Bode, 31 Dec 1952, p. 3: year-in-review chronology April-July 1952 (Wilopo cabinet, Sobsi strike, Westerling, SOB lifting, NU leaving Masjumi). Only Gerwani-adjacent entry: on 8 April the goodwill mission to Kahar Muzakkar under Mrs Salawati returned to Makassar without result.
Java-Bode, 12 March 1954, p. 1: badly damaged OCR report of an anti-[...] committee meeting in Solo planning waves of mass demonstrations and a central action on 15 April with a delegation to the Prime Minister. Attendees included PKI, Partai Buruh, youth groups, Gerwis and Sobsi. The campaign's target is unreadable.