The Secret Factory by W. C. H. Chalk
1965. Reprint. 122 pages. No dust jacket. Paper covered boards. Black and white illustrations throughout. Bright and clean pages with light tanning to text block edges. Binding is firm throughout with mild thumb-marking. Boards have light shelf-wear with corner bumping. Moderate tanning to spine. Notable scratching and marking to boards. Boards are mildly warped. Mild creasing to rear board.