Conversation so far:
What was Tris Speaker speaker traded for?
Lannin traded Speaker to the Cleveland Indians. In exchange, Boston received Sad Sam Jones, Fred Thomas and $50,000.
Are there any other interesting aspects about the Tris speaker  article?
Red Sox president Joseph Lannin wanted Speaker to take a pay cut from about $15,000 to about $9,000.
Was Tris Speaker happy with Red Sox president Joseph Lannin wanting Speaker to take a pay cut from about $15,000 to about $9,000?
The angry Speaker held out until he received $10,000 of the cash that Boston collected.
what did Tris speaker do after he refused to take a pay cut and was traded?
As player-manager for Cleveland, he led the team to its first World Series title.
Any Tris speaker notable wins with the cleveland indians?
In a late season game against the second-place White Sox, Speaker caught a hard line drive hit to deep right-center field by Shoeless Joe Jackson, ending the game.
Did Tris speaker take the Indians to the championship after he caught a hard line drive hit to deep right-center field by Shoeless Joe Jackson, ending the game?
In the 1920 World Series against Brooklyn, Speaker hit an RBI triple in the deciding game, which the Indians won.
What were the terms of Tris speaker's contract with the cleveland indians?
With an annual salary of $40,000, Speaker was the highest paid player in baseball.

Question: When did this occur?
Self-contained rewrite: When did Tris Speaker's trade to the cleveland indians occur?