Catalogue information
BB 9.1 Illustrated story. On page 2 it reads: - This is the first draft of a story that appeared in 1941 in the daily newspaper DE TELEGRAAF under the name 'Tom Poes and the secret of the Blue Earth'. In 1942 this data was used as a screenplay for a cartoon (The Secret of the Cave), which was made during the war, but has not been released.- A German version (Das Geheimnis der Grotte) of this cartoon has been published. There are also some presentation copies known with the text 'Toonder Studios' and that this copy should be returned, which was used as an example for interested parties. The year of publication is not stated in the book, but can be deduced from advertisements in the Volkskrant and Elseviers Weekblad (see image 3).
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