In no particular order, here is my selection of the best Disney history books of 2018:

Ghez, Didier: They Drew As They Pleased - The Hidden Art of Disney's Mid-Century Era published by Chronicle Books; 2018.

Gerstein, David; Kaufman, JB: Walt Disney's Mickey Mouse: The Complete History published by Taschen; 2018.

Schroeder, Russell: Disney's Lost Chords 3 published by Voigt Publications; 2018.

Bossert, David: Kem Weber: Mid-Century Furniture Designs for the Disney Studios published by The Old Mill Press; 2018.

Ghez, Didier: Walt's People - Volume 21 published by Theme Park Press; 2017.

Nichols, Chris: Walt Disney's Disneyland published by Taschen; 2018.

Kurtti, Jeff: From All of Us to All of You: The Disney Christmas Card published by Disney Editions; 2018.

Muller, Jacques: 40 Years of Animated Cartoons published by Partridge Singapore; 2018.

Watkin, Larry: Larry Watkin: A Memoir of an American Man of Letters published by Pulp Hero Press; 2018.

Kurtti, Jeff: Travels with Walt Disney - A Photographic Voyage Around the World published by  Disney Editions; 2018.

Korkis, Jim: Secret Stories of Mickey Mouse: Untold Tales of Walt's Mouse published by Theme Park Press; 2018.

Dallas, Alastair: Inventing Disneyland: The Unauthorized Story of the Team That Made Walt Disney's Dream Come True published by Theme Park Press; 2018. [Note: I have just finished reviewing this. This is a very good book, but you are unlikely to learn much from it if you have already read all the other books released about Disneyland. Unlike the other books in this list, this is not necessarily a "must have".]