Two volumes: one for Weta Workshop (practical effects, models, props, etc) and one for Weta Digital (computer effects and animation).

From the publisher:

This deluxe slipcased two-volume set is an insider's tour of twenty years of film-making magic at Weta Workshop and Weta Digital, the creative companies behind such celebrated films as The Lord of the Rings, Avatar, The Avengers, King Kong, District 9 and The Hobbit. Brimming with never-before-published content, including concept designs, sketches, making of and behind-the-scenes imagery, along with interview material from cast and crew members, it is a stunning look at how the costumes, creatures and characters, weaponry, and visual effects are created for some of the world's most iconic films. A director will have a vision in their head of the kind of movie they want to create but they always need great teams to realise that vision. This is what Weta Workshop and Weta Digital do. Based in Wellington, New Zealand, these two companies, founded by Peter Jackson, Jamie Selkirk, Tania Rodger and Richard Taylor have been an integral part of some of the most ground-breaking and acclaimed movies of all time.

This came from the library of Burny Mattinson (1935-2023), an animator, director, producer, and story artist for Walt Disney Animation Studios, from 1953 until his death in 2023. Mattinson directed Mickey's Christmas Carol and The Great Mouse Detective. He was named a Disney Legend in 2008 and was the longest serving employee of The Walt Disney Company, with a career that spanned almost 70 years. His extensive library included numerous subjects and especially large collections of books on Disney, animation, and classic comic strips.