Merdeka, 12 Feb 1957, p. 3: Antara item on Jakarta women's organisations forming a committee for International Women's Day (8 March 1957), chaired by Ny. Jahja Malik (Perwamu), with Gerwani, Baperki and others.
Harian Rakjat issue of 9 March 1957, very noisy OCR. Page 1 reports the International Women's Day exhibition (handicrafts, cooking, costumes, foreign stalls) in Jakarta, where Umi Sardjono (Gerwani leader) is among women leaders present alongside Fatmawati; the committee of ten women's organisations is chaired by Yahya
Historia article (2019) on women's wings of parties in the 1955 election (Perwamu, Parkiwa, Wanita Demokrat, Aisyiyah, Bhayangkari), noting the PKI grew close to Gerwani and that Mudigdio and Umi Sardjono entered the DPR for the PKI. Context on Gerwani and elections.