I think you are confusing &#x27;unclassified&#x27; and &#x27;declassified&#x27;:
declassified means that it was previously (but no longer) classified; unclassified means that it is not classified.<p>If this had been classified then declassified it would have the original marker (but crossed out), and the text at the bottom would be &quot;Declassified and Approved for Release&quot;, rather than just &quot;Approved for Release&quot;. For an example of this, see <a href="https:&#x2F;&#x2F;www.nsa.gov&#x2F;public_info&#x2F;_files&#x2F;cryptologs&#x2F;cryptolog_01.pdf" rel="nofollow">https:&#x2F;&#x2F;www.nsa.gov&#x2F;public_info&#x2F;_files&#x2F;cryptologs&#x2F;cryptolog_...</a>