Pelvis Parsley is a play on Elvis Presley, who had started his Las Vegas residency in the late 60's.
A female pink panther appears in this short, as Pinky's dream lady.
When the witch is repeatedly unable to get her broom off the ground, the sound effects are the same ones used for the skunk's "empty" tail in the Warner Brothers short "Odor of the Day."
Pinky once again breaks the fourth wall simply with a knowing sidelong expression.