The Collaborative International Dictionary of English v.0.48:

Archivist \Ar"chi*vist\, n. [F. archiviste.]
   A keeper of archives or records. [R.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

archivist
    n 1: a person in charge of collecting and cataloguing archives

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "archivist":
   accountant, amanuensis, bookkeeper, clerk, documentalist, engraver,
   filing clerk, librarian, marker, notary, notary public,
   prothonotary, record clerk, recorder, recordist, register,
   registrar, scorekeeper, scorer, scribe, scrivener, secretary,
   stenographer, stonecutter, timekeeper