Arthur's Mystery Envelope (S02E20)

S02E01 Arthur Meets Mr. Rogers S02E02 Draw! S02E03 Binky Barnes, Art Expert S02E04 Arthur's Lucky Pencil S02E05 D.W., the Picky Eater S02E06 Buster and the Daredevils S02E07 Arthur Makes a Movie S02E08 Go to Your Room, D.W. S02E09 Arthur's Underwear S02E10 Francine Frensky, Olympic Rider S02E11 Buster Baxter, Cat Saver S02E12 Play it Again, D.W. S02E13 Arthur's TV-Free Week S02E14 Night Fright S02E15 Arthur vs. the Piano S02E16 The Big Blow-Up S02E17 Lost! S02E18 The Short, Quick Summer S02E19 D.W. Goes to Washington S02E20 Arthur's Mystery Envelope