Searching for movie about a boy named Sullivan and his dog (films, family)

[Julesh304]

Been searching on and off for the title of a movie about a boy named Sullivan who traveled or hiked with his dog.

Our local PBS station ran it around 1990, so it's a family friendly film and probably made quite a few decades ago (perhaps 30s to 50?).

My best friend's husband choose their middle son's name from this movie, and he's grown-up to be an animator with a move review title on YouTube. I'd love to track down a copy of this movie as a gift for him and the family.

[Tobiashen]

Could it be this one? Boy named Sullivan, not sure if dog is in movie:
Looking for Miracles (TV Movie 1989) - IMDb
or this one:
Lassie (1994) - IMDb

These MIGHT refresh your memory: 2 pages

https://en.wikipedia.org/w/index.php...lm%29#mw-pages