Bobbsey Twins series

The Bobbsey Twins On A Houseboat is a children's novel by Laura Lee Hope, first published in 1915. It is part of a series of books featuring the adventures of the Bobbsey twins, Bert and Nan, and their younger siblings, Freddie and Flossie. In this book, the Bobbsey family sets out on a summer vacation on a houseboat. The children are excited to spend their days exploring the rivers and lakes of the countryside, fishing, and swimming. They also plan...

A scar faced man and his black dog complicate the case of the buried treasure that the twins are investigating.

The twins find a game with real money in it.

The Bobbsey twins become involved with a pair of thieves trying to steal valuable artifacts from the local museum.