Fred works for Slate Gravel Quarry.
Tennestone is "wet" state and Arkanstone is a "dry" state. The reference has nothing to do with the weather; it had to do with the fact that liquor was not sold in certain states in the 1960s. Actually, Tennessee was a dry state for a long time. Bedrock is a thousand miles from Arkanstone.
Note the grape juice reference. Grape juice will be mentioned in almost every episode from now on, since Welch's was the main sponsor of the show.
Zeke Flintstone died at the age of 102, after falling out of a tree.
The Hatrocks are Mona; her granddaughter Granny; Clem/Pa; Clem's wife Gravella; an unnamed redhaired male who is named Zack in the other Hatrocks episode; and their cousins Benjy and Maybelle.
This episode was recorded on 6-11-63.
The Bedrock Hillbillies is most likely an allusion to the megahit (at the time), The Beverly Hillbillies.
San Cemente is a parody of San Clemente, CA.
Characters: The Hatrocks
The characters take their name from the historically infamous Appalacian clan the Hatfields whose generations long feud with the McCoy family has become the stuff of American legend.