Merdeka, 6 April 1951: Batik Workers' Union conference
Merdeka, 6 Apr 1951, p. 2: Serikat Buruh Batik conference on fusion with the textile union; Gerwis listed among the guests and those who gave greetings, with SOBSI and MPs Werdojo and Pardede.
Dr Hatta leads the development conference (Munas Pembangunan, 1957)
Het Nieuwsblad voor Sumatra (27 Nov 1957, p.1): the National Development Conference chaired by Hatta, attended by Sukarno and Djuanda. Twelve morning speakers; Trimurti of the National Council proposes considering the pre-advice of Sukarno, Hatta and Djuanda after the general debate; others propose committees, national