Wikipedia
Mandie
The Mandie books are a children's historical mystery series written by Lois Gladys Leppard, intended for children aged 8 to 12. Since the publication of the first book in 1983, more than seven million copies have been printed of the Mandie series. There are forty novels in the main series and eight in the junior series, along with several special books. The setting of the series is North Carolina in the early 20th century. The story starts around the year 1900, when Mandie is 11 years old. In every book she finds a mystery to solve with her good friends Joe Woodard and Celia Hamilton.