CREATE TABLE table_20812 ("Official #" FLOAT, "TF1 #" FLOAT, "French title" TEXT, "English title" TEXT, "Air date  ( France ) " TEXT, "Original Beechwood Bunny Tale / Source material" TEXT)

Who was responsible for original beechwood bunny tale / source material for the episode title 'The Monster of Blueberry Lake'?
SELECT "Original Beechwood Bunny Tale / Source material" FROM table_20812 WHERE "English title" = 'The Monster of Blueberry Lake'
SELECT "Original Beechwood Bunny Tale / Source material" FROM "table_20812" WHERE "English title" = 'The Monster of Blueberry Lake'