De Locomotief, 29 July 1953: Salatiga branches of SOBSI, BTI, PPDI, Pemuda Rakjat and Gerwis jointly convene a meeting of 35 organisations and parties, which forms a national action committee and decides to send an open letter to Sukarno urging implementation of parliament's decisions and action against Darul Islam and
Algemeen Indisch Dagblad (1953-08-14, p. 2): programme and committee for a sober 17 August celebration in Bandung (no slogans, only the Red-White flag), plus a sports programme. The committee's women treasurers include Mrs. Tata of Gerwis alongside Perwari and Parkiwa; PNI, Masyumi and PKI chair it. Much of the text is
De Vrije Pers fragment (17 Sep 1953) on trade-union reactions to the Sarbupri plantation workers' strike. It notes that the BTI's second congress, attended by SOBSI, Pemuda Rakyat and Gerwis representatives, declared solidarity with the strike and instructed its branches to support strikers.