Why is a raven like a writing-desk?' speaker in 'Alice's Adventures in Wonderland (6)

I believe the answer is:

hatter

(Other definitions for hatter that I've seen before include "Milliner" , "Tea Party member" , "Tea party participant (Alice)" , "Tea-party holder" , "There's a Mad one in 'Alice in Wonderland'" .)

I've seen this clue in The Washington Post.

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