We're almost done! There were only two more clues in the season, and the first one was during the June 27 game, for $800 in the category Margaret Me in the Double Jeopardy! round. Since this one really needs both the picture and Alex's impression to get the full effect, I'm grateful that I can now embed video:
Finally (finally!), almost anticlimactically, on the July 26 episode, in the Jeopardy! round category Books By Chapter Titles for $800:
Monikka, the challenger at the center lectern, correctly responded, "What is The Wizard of Oz?" She went on to almost win, but came up short.
And that is the last Oz clue of the season, since there were only three more games before the show went on its summer break. But I'm sure more Oz clues will show up in the upcoming thirty-third (!) season of Jeopardy!