The Bobbsey Twins are the principal characters of what was, for many years, the Stratemeyer Syndicate's longest-running series of children's novels. The books related the adventures of the children of the middle-class Bobbsey family, which included two sets of fraternal twins: Bert and Nan, who were 12 years old, and Flossie and Freddie, who were six.This anthology of over a dozen books in the Bobbsey Twins series with an active table of contents.Works include:The Bobbsey TwinsBobbsey Twins in the CountryThe Bobbsey Twins at the SeashoreThe Bobbsey Twins at SchoolThe Bobbsey Twins on a HouseboatThe Bobbsey Twins at Meadow BrookThe Bobbsey Twins at HomeThe Bobbsey Twins in a Great CityBobbsey Twins in WashingtonBobbsey Twins in the Great WestThe Bobbsey Twins on Blueberry IslandThe Bobbsey Twins at the County FairBobbsey Twins at Snow Lodge