On the twenty-seventh day of September, nineteen hundred and forty, the plenipotentiaries of three nations affixed their signatures to a document that would alter the architecture of geopolitics for half a decade. The Convention, drafted in three languages and bound in vellum, was filed in the Tokyo archives under classification level kō-otsu.
The accompanying photographic plate, glass-negative reference 1940-09-27-IMG-014, depicts the signing chamber moments before the ceremony. Note the empty chair in the foreground — reserved, according to ministry annotation, for an envoy who never arrived.
The full text of the convention appears in subsequent folios. This introductory note is preserved in its original typescript form, complete with corrections inserted by Vice-Minister [REDACTED] in his characteristic violet pencil.
The plate above, recovered from a sealed dispatch case in 1962, is among the few extant images of that morning. The original glass negative, cracked along the diagonal, was rephotographed onto silver-gelatin paper in 1973 under the supervision of the National Archives' photographic conservator.
The handwritten caption, in pencil on the verso, reads: “harbour at first light, 7 December — smoke visible from the eastern approach.” The handwriting has been tentatively attributed to a junior staff officer whose identity remains under review.
Excerpts follow from the morning telegraphic situation report dated twelve August. The original was struck on a Royal Quiet De Luxe portable typewriter aboard the flagship; carbon copies were dispatched to four addressees, of whom two are named in this file and two remain [REDACTED].
“Visibility at dawn: four nautical miles, deteriorating. Wireless silence maintained since twenty-three thirty hours. The screen disposed in line abreast at intervals of one thousand metres. Awaiting further instruction from First Air Fleet.”
The report is signed by the duty officer in pencil; the signature has faded substantially and is reconstructed from a contemporaneous fair copy held in Box 47.
The chart reproduced here exemplifies the hand-tinted lithographic practice maintained by the Imperial Hydrographic Office through the autumn of 1943. Topographic contours, originally rendered in iron-gall ink, were finished by junior draftsmen with washes of ochre and indigo, each plate distinguished by the watermark of its individual artist.
This particular plate carries the cipher of draftsman U-7, whose work is recognisable by the unusually pale indigo wash and the looser contour shading along the eastern approach. Twelve of his plates survive in the present collection.
The minutes excerpted below were typed in triplicate on flimsy yellow paper, of which the original and one carbon survive. The third copy is presumed destroyed in the archive fire of 1945. The Council convened at half past nine in the morning; deliberations continued until shortly after midnight.
“The Premier observed that the situation in the southern theatre no longer admitted of delay. He requested the Council's authorisation to despatch the second wave of reinforcements without further consultation. The Foreign Minister concurred. The Navy Minister [REDACTED 9 lines].”
Marginal annotations in violet pencil, attributed to the Cabinet Secretary, indicate that the redacted portion concerned an internal disagreement over the deployment of remaining naval air assets. The full text remains classified at level kō-ichi.
With the dissolution of the relevant ministries in October of nineteen forty-five, the maintenance of this series passed first to occupation administrators and subsequently, in 1952, to the National Archives. The files described herein were stored in the Yokohama annex until 1968, when they were transferred to climate-controlled stacks at the Tachikawa facility, where they remain.
Public release of selected documents began in 1995 under the terms of the fifty-year disclosure protocol. Subsequent reviews in 2001, 2007, and 2018 have progressively narrowed the scope of remaining classification. Approximately eighteen percent of the original file remains under seal.
The visitor is reminded that primary-source materials require careful handling and contextual reading. Photocopies and digital surrogates of individual folios may be requested through the Reading Room, subject to the standard waiting period.