Prayer seen at the end of episode:
Lord, guard and guide
The men who fly
Through the great
Spaces of the sky,
Be with them
Traversing the air in
Darkening Storms or sunshine fair.
For some inexplicable reason, a cougar helps Lassie fight the jaguar away from Jason. We never learn why.
In a scene near the end where Lassie is running down the road, you can see the shadow of the truck with the cameraman on it that's driving in front of her.
After Corey is thrown from Jenny, the black mare, Lassie glances back at the horse, who tosses her head. But the black horse doing this is bridleless! Cut back to a long shot of Jenny and she is still wearing the bridle. A few minutes later, when Corey reaches for the reins, there is a closeup of the horse's tossing head--again bridleless.
Parts of the episode were filmed in Pisgah National Forest and the Biltmore House and estate grounds, both near Asheville, North Carolina.
When Paul comes out of the barn and sees Flip and Timmy trying to get the dogs to drop their bones, he asks what they are doing, and Timmy responds, "Butch [not Flip] and I are doing an experiment."
This episode marks the first appearances of June Lockhart and Hugh Reilly as Ruth and Paul Martin, and also the first appearance of Todd Ferrell as Boomer Bates.
The producers asked George Chandler to join the cast as Uncle Petrie starting with this episode. As a special promotion to draw attention back to the show, Campbell's Soup, Lassie's primary sponsor for its entire run, offered copies of the ring Uncle Petrie made for Timmy as a premium to those who purchased their Swanson's TV Dinners. A total of 77, 715 rings were mailed out before the promotion ended.
This episode marks the final appearance for Jan Clayton (Ellen Miller) and Donald Keeler (Porky Brockway).
This is the final episode that Tommy Rettig would appear on the original "Lassie" series. Jan Clayton and Donald Keeler each make one last appearance in the very next episode "Timmy's Family". This episode also marks the first appearances of Cloris Leachman and John Shepodd.
George Cleveland (Gramps) passed away from a heart attack only days after this episode was filmed, after which the show went on an extended production hiatus. During this break, the writers decided to use Cleveland's real life death to wrap up the 'Jeff' storyline in a single episode, and to develop a new storyline with Timmy becoming the main character, and Lassie's new master.
Lucky is introduced as a female, but in "The Horse Show" the following season has mysteriously changed sexes. Her original name is "Josephine".
This is only the second time that Ellen (Jan Clayton) wore pants on screen. The other episode was "Father Ellen", which originally aired only two weeks prior.
This is the first of only two episodes of the series to feature Jan Clayton wearing pants instead of a dress. The other episode is "The Apple Tree", which aired only two weeks later.
The phone number to the Miller Farm is: 1 Long and 2 short.
This is the only time you see a television on one of the farm episodes.
We find out that Mrs Weavers' name is Nora.
This episode introduces Porky's basset hound Pokey.
The Millers used to have a horse called Old Bess.
One of the puppies, named Humphrey is adopted by a little girl called Nancy.