Swedish Government coded telegram re Zimmermann

Date: 1917 Reference: HW 7/8 Creator: Records created or inherited by Government Communications Headquarters (GCHQ) Catalogue context: Room 40 German decrypts: diplomatic telegrams including Zimmerman message of Jan 16 Categories: First World War Subjects: Communications; Conflict; Intelligence; Official publications; Operations, battles and campaigns Topics: Arts and culture; Military and war Period: Early 20th Century Copyright information: Copyright clearance for publication is not required, except in the case of documents in third-party copyright. Usage terms: https://www.nationalarchives.gov.uk/documents/information-management/use-of-tna-materials.pdf