Het Nieuwsblad voor Sumatra (4 Nov 1950, p.2): a World Peace Committee conference in Yogyakarta approved the Prague appeal, proposed demands for the Nederlandse army's withdrawal from Indonesia and an end to foreign interference (Irian, Moluccas) for a London congress, and reported 180,000 signatures. Delegates include
De Waarheid, 16 Jan 1952, p. 4: report on workers' protests against Sjahrir's PSI splitting unions (the Perbupri breakaway from SOBSI's plantation union Sarbupri in Jember). A closing section says the Gerwis annual congress in Surabaya unanimously demanded abolition of the Round Table Agreement and return of New Guinea
Algemeen Indisch Dagblad (1952-01-18, p. 3): in Surabaya a Panitya Pembebasan Irian Barat is formed at the initiative of the Badan Perdjoangan Irian Timur Jawa with SOBSI, PKI, PNI, Murba and others; Gerwis sits in the organisation section with youth fronts. It seeks to end the RTC agreement and abolish the Union.