De Nieuwsgier report (31 May 1955, p. 2) on a PKI anniversary/election rally in Jakarta where Aidit spoke. Mrs. Oemi Sartono (Umi Sardjono), described as a non-party Gerwani member, said she chose the PKI because it is a choice of being for or against the people; non-party candidate Astrawinata also spoke.
Java-Bode, 31 May 1955, p. 2: report on the PKI's 35th anniversary rally on Merdeka Square. D.N. Aidit urged the Dutch to leave and stressed Muslim-Nationalist-Communist unity; Umi Sardjono, Gerwani general chair, spoke sharply against surviving feudalism and large landownership; judge Astrawinata explained his PKI can
De Locomotief, 1 June 1955: report of a PKI mass meeting in Jakarta where Aidit backs the Ali cabinet and urges peaceful election campaigning. Mrs Umi Sardjono, introduced as a non-party Gerwani member and PKI candidate, says she chose the PKI because it is a choice of being for or against the people. Date: the party's
Indische Courant voor Nederland, 8 Jun 1955, p. 2: report on the PKI's 35th-anniversary rally at Merdeka Square, Jakarta. Umi Sardjono, general chairwoman of Gerwani, attacks feudalism and large landownership; Aidit speaks on Muslim-nationalist-communist unity and Dutch profits, with slogans against Dutch and landlords
Straits Times, 8 Aug 1955, by P. A. van der Poel (lead only). Describes how the Communist organisation is preparing for the 1955 Indonesian elections, winning support through sport, religion and an appeal to 'non-party' people. Matched on Umi Sardjono; lead does not name her.