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.
De Waarheid, 19 Jul 1951, p. 5: correspondent's report on Indonesia's first International Children's Day, held in Jakarta on 1 June 1951 with some 25,000 children instead of the expected 4,000. Initiated by the young women's organisation Gerwis, supported by Chinese groups, Pemuda Rakjat, SOBSI and the Peasants' Union
Java-Bode, 31 May 1952, p. 2: at Gerwis's initiative a 1 June Committee with Gerwis, Sobsi, Pemuda Rakjat and IPPI representatives organises Children's Day contests on Merdeka Square for about 4,000 registered children and will distribute over 6,000 old garments to poor children of Tanah Abang and Senen.