detikNews feature (2013) on Gerwis's founding on 4 June 1950 by six organisations (Rupindo, Persatuan Wanita Sedar, Istri Sedar, Gerwindo, Wanita Madura, PPRI) and founders Trimurti, Salawati Daud, Umi Sardjono, Tris Metty and Sri Panggihan, with I.G.A.A. Ratih. Concise account of origins.
Ipong Jazimah's 2016 biographical sketch of S.K. Trimurti (1912-2008): journalist, labour minister, Gerwis co-founder, Petisi 50 signatory. Pages 50-51 cover Gerwis's founding; relies on a few secondary sources.
English-edition Tempo cover story 'End of the Road' (4 Oct 2021, Retno Sulistyowati), a translation from the Umi Sardjono special report. It traces Umi's formation in Pathuk Youth, Pesindo, BBW with S.K. Trimurti, Madiun 1948 arrest, founding of Gerwis (Semarang, 3-6 Jun 1950), Gerwani growth from 80,000 to 650,000 (19