From The Secretary of State. States that there is no objection to Cypher 02 being distributed at once to the Reporting Officers with instructions not to use them until specially authorized., 1918

From The Secretary of State. States that there is no objection to Cypher 02 being distributed at once to the Reporting Officers with instructions not to use them until specially authorized., 1918, MSS Archives.2003/1.WPHC 4/IV.1918. File 1100/1918, Box: C3026906; Reel: AU Microfilm 78-343; Reel: MSS Microfilm 0176. WPHC 4/IV : Inwards correspondence, 1918., MSS Archives.2003/1.WPHC 4/IV.1918. Western Pacific Archives, University of Auckland. https://archives.library.auckland.ac.nz/repositories/8/archival_objects/216037 Accessed November 23, 2024.