The first time "I'm Looking Over a Four-Leaf Clover" by Harry M. Woods was used in a Looney Tunes cartoon. It would be a frequent music cue during the late '40s and throughout the '50s in the series.
Daffy uses "sufferin' succotash!" here, which would become Sylvester the cat's trademark phrase.
Daffy is shown using a dumb waiter, a kind of pulley elevator system seen in older stately homes at the time.
Elderberry and old lace is a nod to the popular 1944 film "Arsenic and Old Lace," in which the villains use poisoned elderberry wine to off their victims.