This collection of concept sketches, concept art, backgrounds, character sketches and designs, and film stills follows the story of Studio Ghibli's animated film The Secret World of Arrietty. All concept and rough character sketches are by director Hiromasa Yonebayashi; key art sketches by Hayao Miyazaki; concept art and backgrounds by the art staff supervised by art directors Yoji Takeshige and Noboru Yoshida; and character design by Ai Kagawa and Akihiko Yamashita.

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.