CREATE TABLE table_66198 ("Title" TEXT, "Series" TEXT, "Director" TEXT, "Production Num." TEXT, "Release date" TEXT)

what is the title when the release date is 1938-12-17 and the production number is 8610?
SELECT "Title" FROM table_66198 WHERE "Release date" = '1938-12-17' AND "Production Num." = '8610'
SELECT "Title" FROM "table_66198" WHERE "Production Num." = '8610' AND "Release date" = '1938-12-17'