Item Details:

• Titles: 2.The Hidden Staircase (1959), 29. Mystery at the Ski Jump (1968), 44. The Clue of the Crossword Cypher (1967), 45. The Spider Sapphire Mystery (1968)
• Author: Carolyn Keene
• Publisher: Grosset and DunlapBooks
• Copyright: Various
• Edition: Unstated

Condition:

• Books are in good condition
• Minor wear at edges, spine ends and corners, with some rubbing to edges, corners and spine ends (see photos)
• Some text blocks are soiled or foxed from reading and age of paper
• Books have light soiling to endpapers and text from reading
• Staircase’ pages have darkened significantly with age; book is readable