When the storm blows in, despite deafening howling wind sounds and the actors' hair being ruffled, the sky is bright and clear and all the vegetation in the foreground and background is perfectly still.
Mr. Carter's office windows have no glass in them.
On a map on the wall, Bill Shelby points to Charlottesville then asks Johnboy where his land is. He point to the northwest as Walton's Mountain. Schuyler, Earl Hamner's home town, is to the south.
A trained nurse like Mary Ellen would have known that Curt was preparing to do a tracheotomy on Martha Rose, instead of having to ask him what he was doing. It's also unlikely that she would have fainted, since she would have learned how to do the procedure herself while in nursing school.