The History box hasn't been added to any of the themes yet.
Hopefully soon. But until then the easiest thing to do is to go to the Robservations board and enter the episode number in the search box in the header.
And speaking of Robservations, just prior to the upgrade to SMF 1.1.2, I rewrote the entire messages database, putting everything in chronolgical order (our upgrade to YaBB SE from YaBB SP hadn't done that
) so Robservations and all the other boards created prior to February 17, 2003 are no longer in disarray when it comes to the way topics are sorted. They're all sorted by last post now - though even that can be changed by clicking on the Subject, Started by, Replies, Views and Last post links at the top of each board.
