archivist
/ˈɑː(ɹ)kəvɪst/noun
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One who is in charge of, or performs the task of creating, collecting, cataloguing, and organising, archives.
"The billionaire’s will established a trust to create a staff of archivists that would chronicle and preserve his rise to prominence."
Synonyms:
historian, librarian, preservationist, recordkeeper, scribe