Is it the Museum Set? Laostyle17 and I saw the set owned by his daughter at a show near Chicago a couple years ago. Wonderful. Not to be missed if you live anywhere near.
It is the museum set. A link to the show: http://www.springfieldart.museum/?exhibition=classic-images-photographs-by-ansel-adams. The link says the exhibit was coordinated by the Peoria Riverfront Museum, which presented a larger AA exhibit last year. The Peoria exhibit was curated by AA's daughter-in-law, not daughter, and included memorabilia such as his Deardorff with 10" Ektar wide field, notebooks, original early prints, etc. It was certainly worth the 600 mile round trip overnight visit.
I saw the Peoria exhibit. I believe it was called "Western Exposure." It was very good and even had some of Adams' color work. Adams'work in B&W is very good IMHO.