Indische Courant voor Nederland, 25 Aug 1951, p. 1: the August 1951 raids in East Java. About 26 arrested in Surabaya, including Mrs Parjani Ilham, chairwoman of Gerwis there, journalists, Sobsi and PKI local leaders; about 175 arrested across East Java. Police seized pictures of Mao, Lenin and Stalin.
Indische Courant voor Nederland, 7 Jan 1953, p. 3: year-in-review chronology for 1952 (selected entries translated). Mentions the August 1951 raids, the 17 October 1952 affair, release of East Java arrestees on 30 Oct, a goodwill mission to Kahar Muzakkar under Mrs Salawati (8 Apr), and Aidit and Njoto refused entry to
Indische Courant voor Nederland, 17 Mar 1954, p. 1: government says Swapradja (self-governing areas) cannot be abolished at once; Surakarta anti-Swapradja committee, which includes Gerwis, PKI, Pemuda Rakjat and Sobsi, plans mass demonstrations by 15 April. Also notes the Susuhunan's studies.