When John Boy and Wade are sawing the tree with the two-man saw, the depth of the cut into the tree alternates with the scene sequence.
At the end of this episode, it mentions that Wade became a famous wood carver. In a future episode, The Estrangement, he indicates that he was never able to sell any of the wooden articles.
While Lucas Avery is sitting in Martha Corinne's parlor, his spectacles disappear from his face between close-ups and do not reappear.
During the conversation with Lucas Avery in the parlor, there is a bright patchwork afghan over the back of Martha Corinne's rocking chair. When everyone stands up to leave, the afghan is gone.
This episode establishes that Martha Corinne and family were forced out of their home by the government to make way for the construction of the Blue Ridge Parkway. However, when John-Boy and Martha Corinne visit her old home site two years later in "The Pony Cart", there is no sign of a highway anywhere.
Martha Corinne tells the family how when Vera has her baby, Floyd, it will be 4 generations on the mountain. It will actually be 5 generations. Martha Corinne, Boone, Boone's son, Wade and Floyd. We never hear much about Boone's son.
At about 12:15 into the episode, during the single shot of Grandpa in the back of the truck, a 1970s era car can be seen driving on the road in the background.
At 4:45, the extras playing the road workers are just pointlessly shoveling sand from one pile to another.
When the family is finally able to drive after the road block the scene has them driving on the dirt road. When they do a close up with John, Olivia and grandma, the road is clearly paved. The truck stops when grandpa calls to John. The road is dirt then.