"Rube" 1846?

[Sam Clements]

http://listserv.linguistlist.org/cgi-bin/wa?A2=ind0309D&L=ads-l&P=R2697


In that message, George Thompson offers :

<<1846:   Playing the little "Joker."  [headline]  [A rube visits a] "crib" in Park Row, where . . . the "boys" were playing the thimble rig, commonly called the little Joker.  New York Herald, February 8, 1846, p. 1, col. 4>>

I'm curious about the "rube."

Did it get picked up by OED and M-W?  

Sam Clements