There are a smattering of episodes available on VHS from Columbia House of The Beverly Hillbillies; you're not going to complete the series by any means, but you get some of the better episodes such as the John Wayne appearance, guest shots from Sammy Davis, Jr., Pat Boone, and the so-so Phil...
I wish CBS would quit piece-milling out The Beverly Hillbillies and Petticoat Junction and put them out on DVD quicker or give it to Shout! Factory. I really wish someone else was doing Happy Days because CBS is going to chop it to pieces over music rights.
The one saving grace to Petticoat...