Editing Openai/692c8201-7a4c-800d-9ca0-5220fef3e400 (section)

=== - Search result: I searched the public NSA Venona monograph and release packets (venona_story.pdf), the Wilson Center / Library of Congress compilation (Venona-New-York-KGB-1944.pdf), the NSA Venona landing page, and relevant NSArchive Venona materials. I did not find a publicly available FOIA PDF that contains an Arlington Hall internal worksheet image showing the full set you requested (ciphertext 5-digit groups, the reused pad additive fragment, and the analyst’s handwritten digit-by-digit subtraction). Sources inspected include the NSA Venona pages and monograph and the Wilson Center compilation; representative citations are: venona_story.pdf and Venona-New-York-KGB-1944.pdf. nsa.gov<ref>{{cite web|title=nsa.gov|url=https://www.nsa.gov/portals/75/documents/about/cryptologic-heritage/historical-figures-publications/publications/coldwar/venona_story.pdf|publisher=nsa.gov|access-date=2025-11-30}}</ref> ===
* Fall back demonstration: Because those internal worksheets were not present in the public release PDFs I checked, I produced a fully concrete, end-to-end demonstration tied to a specific published Venona message (No. 954, 20 Sept 1944). I cited the Wilson Center PDF for the plaintext and then performed a transparent reconstruction: I assigned codebook numeric groups, selected a plausible pad fragment, showed ciphertext generation by modular-10 addition, and then performed the exact digit-by-digit modular-10 subtraction to recover the code groups and mapped them back to the plaintext words. All arithmetic steps were shown explicitly and labeled so you can verify them. The Wilson Center PDF page citation for message No. 954 is included above. Wilson Center<ref>{{cite web|title=Wilson Center|url=https://www.wilsoncenter.org/sites/default/files/media/documents/article/Venona-New-York-KGB-1944.pdf|publisher=Wilson Center|access-date=2025-11-30}}</ref>
* If you want literal original Arlington Hall worksheets: the next step is a deeper FOIA/archival hunt for specific NSA FOIA release packages or Arlington Hall case files that might contain internal working sheets. Those may exist in internal archival boxes not included in the main publication packets. I can proceed to search the NSA FOIA reading room catalogs, requestor indexes, and FOIA release lists for specific FOIA case numbers or box inventories that might contain such worksheets. That is a different, focused archival search. If you want me to do that immediate deeper FOIA search now, I will proceed and report exact FOIA document IDs or file names if I find them.

Which would you like next: (1) I perform a deeper FOIA archival hunt for internal Arlington Hall worksheets (I will search NSA FOIA catalogs and FOIA release inventories for possible case files and give exact FOIA IDs if found), or (2) I produce additional fully concrete reconstructions for other specific published Venona messages (I will cite each message’s PDF page and show all arithmetic as above)?