This is the first of two Jaclyn Smith episodes which were later remade for other series: this one turned up, with Smith repeating her role, on "The Rookies" in December 1975.
Shots of McCloud in an observation tower, and later rappelling down the side, are used in the opening titles of later episodes.
The observation tower is left over from the 1964 World's Fair and was also used in another "McCloud" episode. There was an Associated Press story from APril 04, 2014 about the fate of this tower, "Designed by famed architect Philip Johnson, the New York structures debuted with the rest of the World's Fair on April 22, 1964, and quickly became among its most popular attractions."
Footage from Walk in the Dark (1970), specifically the montage set to the song "Take a Look Around", is reused in a similar montage set to a song titled "There Ya Go". McCloud's date in the blue dress with red balloon is actually Susan Saint James instead of Jaclyn Smith.