The Missing Chums

["Children's stories" "Fiction" "Missing persons" "Mystery and detective stories" "Kidnapping" "Brothers" "Juvenile fiction" "Mystery fiction" "Friendship" "Hardy Boys (Fictitious characters)" "Children's fiction" "Hardy boys (fictitious characters) fiction" "Missing persons fiction" "series:HardyBoys" "collectionID:HBMS1" "Brothers -- Juvenile fiction" "Missing persons -- Juvenile fiction" "Hardy Boys (Fictitious characters) -- Juvenile fiction" "Adventure" "Children\u2019s" "Mystery" "Joe Hardy (Fictitious character)" "Frank Hardy (Fictitious character)" "Detective and mystery stories" "Juvenile literature"]