Merdeka, 10 April 1951: Gerwis supports the 14-party joint programme
Merdeka, 10 Apr 1951, p. 2: Antara from Semarang that the Gerwis central board (6 Apr 1951) endorses the 14-party joint programme (annul KMB, independent foreign policy, revoke SOB) and demands a broad national coalition cabinet.
Abadi, 14 April 1951, p. 1: Support for the 14-Party Joint Programme
Abadi, 14 April 1951, p. 1: notice that letters and telegrams endorsing the 14-party joint programme poured in, including from the Gerwis central board in Semarang alongside unions and peasant groups.
Commemoration of 1 May 1951 in Surakarta (Bentara)
Full-page notice in the Surakarta magazine Bentara listing the organising committee of the 1 May 1951 Labour Day commemoration, a left united front dominated by SOBSI unions and including Gerwis.