CREATE TABLE table_33698 ("Episode Number" FLOAT, "Title" CLOB, "Podcast Date" CLOB, "Run time" CLOB, "Historical References" CLOB)

What is the historical reference of the episode that aired on October 23, 2005?
SELECT "Historical References" FROM table_33698 WHERE "Podcast Date" = 'october 23, 2005'
SELECT "Historical References" FROM "table_33698" WHERE "Podcast Date" = 'october 23, 2005'