There are a number of good books out there and as Pearl said "Last of the Summer Wine from the Director's Chair" is a perfect place to start. It has many great pictures and a lot of information., However, it does not have a picture of Clegg's lounge.
Andrew Vine's book "Last of the Summer Wine" has a lot of great information, but only a small section of pictures in the middle. Again there is no picture of Clegg's lounge.
Another book with a lot of great pictures and information is "30 years of Last of the Summer Wine." But still no picture of Clegg's lounge. It was written while the series was still running, so doesn't have information on the last few years.
I also checked a little book called "The Making of the Vintage Years of Last of the Summer Wine" looking through the lens of Holmfirth photographer Malcolm Howarth. A lot of good pictures, some of the full cast and crew, but none of Clegg's lounge.
The same with "The Best of British Comedy Last of the Summer Wine" by Richard Webber. Most pictures are of cast members, and none of Clegg's lounge.
One last book I checked was "Summer Wine Country" by Roy Clarke and photographs by Paul Barker.
This book is outdoor shots of the country side and the only familiar picture is an outdoor, night shot of the café. So I don't think it's what you're looking for.
Welcome to the forum and enjoy whatever books you may decide to get even though none of them have the picture you're looking for.
Marilyn