Betsy-Tacy
The Betsy-Tacy series is a collection of books written by Maud Hart Lovelace between 1940 and 1955. The books are written at progressively more difficult reading levels as the characters age. They follow the adventures of Betsy Ray and her friends and family from the time that Betsy turns five until she is in her early twenties. They take place in the very late 19th and early 20th centuries.
Read more about Betsy-tacy.