The Three Investigators Preliminary interior drawing for The Secret of Terror Castle

Extremely rare preliminary drawing for "The Secret of Terror Castle" by Harry Kane from The Three Investigators children's books by Robert Arthur. As a preliminary drawing, it serves as a blueprint for the final drawing, showcasing the artist's ideas and vision for the piece before committing to the detailed art creation process. You can see a note from the editor to "HK" Harry Kane

The paper has some browning along the edges, and some slight waviness, but is overall in pretty good shape.

Comes unframed and unmatted, shipped flat with insurance. Must be signed for upon delivery

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