Family Feud episode #843 1979, if known where please help!

I'm a new user to forums, but I needed to start a search somewhere. My Grandfather was on an episode of Family Feud in 1979, episode #843 October 18th was the original airdate for ABC, "Week #170 (September 25, 1979)" The family was Kelley vs. Lindner (My grandfather). The reason why I'm trying to find this is how my grandmother used to have it (it is believed) on VHS. Sadly, we don't have it anymore. Apparently, it was so embarrassing I don't think he would want to find it. I think it would be an amazing thing to find in-fact, I had never seen it. I've looked everywhere I can. YouTube, off-site links, etc. I have no idea if this episode even is still out there, if it is I can help as much as I can to find this. I've only found the episode number, the year, the family, and the date. I can't seem to find the video. Please share if you can or lead me in any way to find this. I have no idea on who to reach out to as-well. Hopefully this isn't a case of tape ripping's, or a case of lost media but sadly i have a feeling it is. If you know anywhere abouts to this episode, please please reach out to me.
Thank you greatly, I hope I can help on any other searches of yours as a thank you. 

the source that i had used for the info is linked & my email. 


main source


my email