Just wondering.

Apparently those episodes were not included in the Screen Gems syndication package (along with seasons 6 and 7).

Correct. I think all the episodes were shown on ABC daytime, but not in syndication.

One interesting thing about Donna season 4 is all those unsold backdoor pilots: the one with Miyoshi Umeki as a wise Hawaiian nurse... the one with William Windom and his farm family (including Jimmy Hawkins as the ranch hand)... the one with Roberta Sherwood and her singing sons (plus uncle Gale Gordon).. no winners, but they sure make Donna Reed's show look even more irreplaceable!

I am ready for the missing episodes. Tubi only goes to 5.