Book 2

May 7, 2019
English
Hardcover (128 pages)
Edition: Special Edition

Book 3

Edison: The Mystery of the Missing Mouse Treasure

by Torben Kuhlmann, David Henry Wilson
Oct 2, 2018
English
Hardcover (112 pages)

Book 4

Sep 7, 2021
English
Hardcover (128 pages)

Book 5

Sep 26, 2024
German
Hardcover (128 pages)

Book 1-3

Oct 12, 2020
German
Audiobook