SPA (Sumatra Planters Association) No. 121/Hoc. July 20, 1959, transmitting central war administration. No. Prt/Peperpu/011/1958- ban use of estate laws by spotters of April 14, 1958 2nd announcement No. 073, dated June 19, 1959 of army information coordinator containing ordinance No. P&T/Peperpu/044/1959 dated June 10, 1959, 1958 - 1959, Box: 21, Folder: 5. Karl J. Pelzer papers, 4267. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/1003132 Accessed September 02, 2026.