Skip Homeier guest starred as Joe Cleary/The Brazos Kid. The role of his wife, Anne Cleary, was played by Homeier's wife in reality, Della Homeier (nee Della Sharman).
In the newspaper article that Samantha wrote, her last name is spelled Frye.
The normally blonde Barbara Eden has bright red tresses, most likely a wig, which "reads" better on color TV.
The Pendleton Detective Agency is a play on the real-life Pinkerton Detective Agency.