This appearance was the first acting endeavor for Adam West immediately after the finale of Batman (1966).
Olan Soule, who portrays the telegrapher, was the first to voice Batman in "The Batman/Superman Hour" cartoon (1968); while Adam West who portrayed Major Eliot had just completed his portrayal in the live action "Batman" (1966) series.
Victoria's temporary stint in a wheelchair evokes one the most iconic roles of Barbara Stanwyck's movie career, the film-noir-classic "Sorry, Wrong Number", in which she plays the wheelchair-bound hypochondriac wife of a man who has plotted her murder.