Various sternwheeler riverboats appear in the series. The Julia Belle Swain appears in the opening and closing credits, and are in fact the only scenes that were actually shot on the Mississippi River.
Ian Tracey discusses in "The Making of Huckleberry Finn and his Friends" that the film industry has pressures and that there were there were no rules for young performers when this series was made. He said they had no tutors, they did not have a cap on working 8-hour days (and that they, in fact, often worked 14 and 15-hour days with no breaks), and that they were not told about certain things they would be required to do as part of the filming of the series.
Michael J. Fox was in the running for the role of Tom Sawyer along with Sammy Snyders.
Brigette Horney's voice was overdubbed due to her German accent.
In an interview in the aughts, Dale Walters said that Sammy Snyders acted like a spoiled brat during the production and was difficult to work with. He said that Snyders did not learn his lines well and often wanted special treatment. He recounted that Snyders complained about working long hours and was reticent and resistant about having to be naked while filming a swimming sequence, whereas he and Ian Tracey put their modesty aside to film the sequence authentically to the script and the story.