Surabaja bij dag en nacht (Surabaya day and night; Gerwis meeting notice)
Surabaya day and night: Gerwis meeting on Peking delegation experiences
Surabaya local-news column in De Vrije Pers (30 Jan 1953); only one item concerns Gerwis: its Surabaya branch announced a meeting on 1 Feb at the Kabupaten pendopo to explain the organisation's aims and the experiences of its delegation to Peking.