The Three Investigators Books #1-4. Paperback Hollow Tree Press Editions. Mint!
All four have not even been opened yet alone read. I’ve decided to collect the new hardcovers, so I stopped buying the Hollow Tree after the first four. Mint condition!
1968 Three Investigators #9 Mystery Screaming Clock Hitchcock Ex-Library HC
Book is in acceptable condition. Cover has significant wear but pages are holding together. Being sold as a reader copy.
Vintage 1990s The 3 Investigators Book Bundle Lot Of 9 Mystery Detective Series
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