In the early 1990s the U. S. Navy transferred all its cryptologic
archives from Crane, Indiana to the National Archives in
Washington. This includes 26,581 JN-25 intercepts from 1
September to 7 December. All of these are available for public
review.

You forgat to mention:
EXCEPT those withdrawn documents
(Because of NSA notices of course)
Stephen Budiansky, using the original USN designation
AN for what was later called JN-25B.

You forgat to mention his NSA ties.

book "A" (hence the classification of the code in use in 1941 as
JN-25 "B") is simply ignored by Stinnett. When challenged about
this on his web site he simply failed to respond, except to complain
about spelling errors and insist

In the Archieve II records Safford asserts that US was reading 90% of JN25b
prior to Dec.7.
According routing designator Nov.16 Lietwiler letter was also seen by Safford .
But Safford did not say anything to Congressional investigators about his
assertion or Lirtwiler letter.

Of Course US congress was only allowed to investigate blinfolded,
They were allowed to investigate Pearl Harbor but only by using hand picked
documents.
It happens only in Washington.