Abadi, 16 May 1951, p. 2: Antara report that International Children's Day (1 June), proposed by WIDF, would be celebrated in Indonesia for the first time by a Jakarta committee with Gerwis and SOBSI as secretariat.
Nieuwe Haarlemsche Courant, 20 August 1951: reports the August 1951 mass arrests in East Java (the 'Razzia Agustus') of 26 people in Surabaya including journalists, PKI local chair Hutapea, Sobsi's Surono and Sutomo, and the Gerwis chairwoman Mrs Parjani Ilham; 175 more arrested in Malang, Bojonegoro, Madiun and Kediri
Trouw (20 Aug 1951) on the August 1951 arrests: 26 detained in East Java including journalists, the PKI branch chairman, SOBSI unionists and Gerwis chairwoman Mrs Parjani Ilham; 50 communists arrested in Bandung and SOBSI offices sealed. Attorney General warns of tighter press control; 17 August passed quietly.
New York Times, 16 June 1957, p.37, Special to the Times from Jakarta: Sukarno names the 45 members of the new National Council (Dewan Nasional), chaired by himself, with Roeslan Abdulgani as deputy chairman and secretary-general. About a quarter are described as Communists or sympathisers, including PKI member Sujono