Deduce, You Say (1956)

Continuity mistake: When we see Dorlock Holmes at his desk at the start of the cartoon, you can see that he is writing with the feather in his right hand, but in the next shot he is holding the feather with his left hand.

Porky Watkins: Name? Speak up, old boy.
Shropshire Slasher: Shropshire Slasher.
Porky Watkins: Occupation?
Shropshire Slasher: Shropshire Slasher.

Trivia: There is a sign at the "Henry the Eighth's Fifth" advertising "Selzer's Water" - a reference to the Warner Brothers producer Eddie Selzer.