My favorite "Partridge Family" episode is "A Knight In Shining Armor" which guest starred Bobby Sherman as an aspiring songwriter who looks to the Partridges to help him out. They find a very funny partner for him (Wes Stern as Lionel) and the two of them head off in their own sitcom called "Getting Together" which sadly wasn't on for very long but is still beloved by Bobby Sherman fans. Until now, "Getting Together" was also very hard to find online but I have managed to find a few episodes on YouTube recorded on 16mm film using very primitive equipment but everything still works fine and you should be able to see and hear it without too much trouble even with the background noise.

2 full episodes (https://www.youtube.com/watch?v=GKf2hsibUdY&t=8s)

1x13 - Breaking Up Is Hard To Do (https://www.youtube.com/watch?v=dG0EHbrGaOw&t=138s)

The little girl who plays Bobby's sister Jennifer is Susan Neher. She was the original Joanie Cunningham, playing her in the "Love American Style" episode "Love and the Happy Days".

Thanks for the link. It's been years since I've seen it, just wish it picked up a little better.