While 99 is handling routine stamp redemption, an African-American man asks for a poster of Governor Wallace...and a box of darts. Governor Wallace was the governor of Alabama and a hardcore racist. He opposed desegregation ... standing at the very door of one school to block black students from being admitted. He was paralyzed during an assassination attempt in 1972 and spent the rest of his life in a wheelchair.
Don Adams wears two band-aids on his left hand throughout this episode, one on the little finger and the other on the index finger (next to the thumb). No plot reason is provided for why these are being worn by Maxwell Smart.