Mythical figure often pictured holding a book (4)

I believe the answer is:

clio

(Other definitions for clio that I've seen before include "one historically inspiring" , "1 across's Muse - from Renault?" , "Muse of history - car" , "one of nine sisters" , "One of the Muses" .)

I've seen this clue in The New York Times.

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