CREATE TABLE table_66388 ("Title" CLOB, "Series" CLOB, "Director" CLOB, "Production Num." CLOB, "Release date" CLOB)

What series has 1935-07-13 as the release date?
SELECT "Series" FROM table_66388 WHERE "Release date" = '1935-07-13'
SELECT "Series" FROM "table_66388" WHERE "Release date" = '1935-07-13'