Peter Mark Roget compiled the first draft of his famous thesaurus in 1805 at the age of 26. He resumed serious work on it in the late 1840s, published the first edition in 1852 and continued to work ...

Philo of Byblos, a Greek historian and grammarian, wrote On Synonyms, a dictionary of synonyms that scholars consider to be the first ancient thesaurus. Dating to the late 1st century or early 2nd ...

(New York Times)Sylvia Plath loved her thesaurus so much that she called herself "Roget's strumpet." She consulted it all the time while working on her first collection, "The Colossus," and it shows.