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Openai/692c8201-7a4c-800d-9ca0-5220fef3e400
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=== Assistant: Answer in two parts: A what I searched, what I found, and exact FOIA/archival items checked; B the required fallback de⦠=== Answer in two parts: (A) what I searched, what I found, and exact FOIA/archival items checked; (B) the required fallback demonstration using a specific declassified message (Wilson Center / Library of Congress compilation) because no public FOIA item containing the original Arlington Hall internal worksheet (scanned handwritten arithmetic showing ciphertext 5-digit groups, the reused pad additives in depth, and the digit-by-digit subtraction) could be located in the public releases I checked.
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