Short item, Java-Bode, 13 Jan 1953, p. 2: a Sarbupri delegation including Mrs Setiati Surasto visits PM Wilopo about overtime pay on Sumatra's East Coast and protests the labour minister's decision; Wilopo refers them to the P4P. Same text as the Indische Courant item.
Short item, Indische Courant voor Nederland, 17 Jan 1953, p. 3: a Sarbupri (plantation workers' union) delegation including Mrs Setiati Surasto visits PM Wilopo on 5 Jan about overtime pay on Sumatra's East Coast and protests the labour minister's decision; Wilopo refers them to the P4P.
Java-Bode, 18 March 1954, p. 2: short item on two rival committees for 1 May Labour Day in Binjai, East Sumatra: one uniting Sobsi, Sarbupri, Gerwis, Pemuda Rakjat and similar bodies, chaired by Sobsi, and a non-Sobsi committee of PPPRI, OBPI, Perbupri and PGRI.