Collection of historical records (7)
I believe the answer is:
archive
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">collection of historical records</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for archive that I've seen before include "Document depository" , "Store for historic records" , "Collection of public records etc" , "Record repository" , "Collection of historic or institutional documents" .)