Hardy Boys -- Juvenile fiction. Counterfeits and counterfeiting -- Juvenile fiction. National security -- Juvenile fiction. Detective and mystery stories.

Mice -- Juvenile fiction. Theft -- Juvenile fiction. Necklaces -- Juvenile fiction. Mice -- Fiction. Stealing -- Fiction.

Crown jewels -- Great Britain -- Juvenile fiction. Theft -- Juvenile fiction. Detective and mystery stories. Humorous stories. Mystery and detective stories.

Owls -- Juvenile fiction. Animals -- Juvenile fiction. Pumpkin -- Juvenile fiction. Sharing -- Juvenile fiction. Diaries -- Juvenile fiction.

School children -- Comic books, strips, etc. School children -- Juvenile fiction. Elementary schools -- Comic books, strips, etc. Elementary schools -- Juvenile fiction. Lost articles -- Comic books, strips, etc.

Police -- France -- Paris -- Fiction. Mystery fiction. Maigret, Jules (Fictitious character) -- Fiction.

Private investigators -- England -- Fiction. Detective and mystery stories. Poirot, Hercule (Fictitious character) -- Fiction.

Trees -- Juvenile fiction. Mice -- Juvenile fiction. Farms -- Juvenile fiction. Trees -- Fiction. Secrets -- Fiction.

Police -- Norway -- Fiction. Murder -- Investigation -- Norway -- Fiction. Norway -- Fiction. Mystery fiction.

Fathers and sons -- Fiction. Sheriffs -- Fiction. Missing persons -- Fiction. Detectives -- Fiction.

Witches -- Juvenile fiction. Cats -- Juvenile fiction. Australian fiction. Children's stories.

Thea Sisters (Fictitious characters) -- Juvenile fiction. Mice -- Juvenile fiction. Masquerades -- Juvenile fiction. Mystery -- Juvenile fiction. Italy -- Juvenile fiction.