Good work! "Bewitched" had a ton of cars and in particular, is a treasure trove of vintage 1960s Chevys. I'm glad someone is pulling images.

#3: 1965 Chevrolet Chevelle wagon

#4 & #6: I think they're the same car, a 1966 Chevrolet Chevy II or Nova

#9: looks to be a Checker Marathon

#10 and #11: 1970 Ford Country Sedan wagon, *extremely* rare to see a Ford on "Bewitched"!

#17: (edit) looks to be a 1970 Chevrolet Impala...did they have a Biscayne trim level in '70?

#20: 1971 Chevrolet Impala (ditto Biscayne for '71?)