Surakarta: Gerwis bijeen (Surakarta: Gerwis meets)
Surakarta: Gerwis meets (Central Java working conference)
De Locomotief, 11 July 1953: one-line notice from Surakarta that the Central Java Commissariat of Gerwis will hold a working conference from 27 July (end date garbled in source), with delegates from all of Central Java.