The Boxcar Children # 30 The Disappearing Friend Mystery (Used Paperback) - Gertrude Chandler Warner

The Aldens start a helper service with their new friend,Beth, to raise money for the Greenfield Hospital! But Beth keeps disappearing when it's time to help. Then someone tears down their signs and lets the air out of their bike tires. Who would want to sabotage their fund-raiser?

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