Maud Hart Lovelace (1892-1980) based her Betsy-Tacy series on her own childhood. Her series still boasts legions of fans, many of whom are members of the Betsy-Tacy Society, a national organization based in Mankato, Minnesota.
In addition to illustrating the first four Betsy-Tacy books, Lois Lenski (1893-1974) was the 1946 Newberry Medal winning author of Strawberry Girl.