De Locomotief, 29 Mar 1952: a Blue Band margarine advertisement listing prize-competition winners. It was retrieved only because of the name Sumijarsi/M. Caropeboka (Bogor) in the winners' list; no Gerwani-related content. False hit, much OCR unreadable.
Newspaper advertisement page (1 Apr 1952) in De Vrije Pers listing prize winners of a consumer contest (Fiat 500, bicycles, radios and others) with long lists of names. No Gerwis/Gerwani content; an archive tag linking it to Sumiyarsi Siwirini Caropeboka rests only on a surname fragment in the list.
Het Nieuwsblad voor Sumatra page-4 advertisement (1 Apr 1952): a long Blue Band/Unilever prize-draw winners list (cars, scooters, radios, etc.) with hundreds of names and towns. 'M. Caropeboka - Bogor' appears as a ballpoint winner. Nothing indicates any link to Sumiyarsi Siwirini Caropeboka; the name match is coincide
State Department intelligence report (27 May 1952) on Beijing's May 1952 festivals and the Asia-Pacific peace conference preparations as part of the communist 'peace' campaign. Mentions the WIDF only as a precedent for earlier Beijing meetings (Nov-Dec 1949); no reference to Indonesia, Gerwis or Gerwani found.
De Waarheid, 25 Jul 1952, p. 4: report on a celebratory reception in The Hague and Amsterdam for released Dutch conscientious objectors to the Indonesian war (Wil van Kempen, Niek de Pater, Jan Maassen) and Piet van Staveren, with CPN, ANJV and NVB speakers. A delegation of Indonesian women and the group Sinar Indonesi
De Locomotief, 18 Nov 1952: Indonesian-language thank-you notice by the Milono family and by newlyweds Mulyono and Sutanti after their wedding on 13 Nov 1952, plus a subscription form. No connection to Gerwani; the bride Sutanti is not shown to be Soetanti Aidit. False hit.