Aunt Jane's Nieces and Uncle John picks up the continuing story of the three cousins Patsy Doyle, Beth De Graf, and Louise Merrick, and their family; the plot of the book begins three days after the wedding of Louise and her fiance Arthur Weldon. The sixth novel begins with the cousins' Uncle John getting an inspiration for a new adventure: in this case, the family will escape a cold New York City winter by taking a trip to southern California, the land of "sunshine and roses."

Inspired by Louisa May Alcott's Little Women, this book, which Wizard of Oz author L. Frank Baum wrote under the pen name Edith Van Dyne, is much in the same vein as Alcott's cozy coming-of-age tale. The first in a series, the story of this novel follows three nieces who are summoned to their wealthy aunt's estate so she can decide to whom she will bequeath her sizable inheritance. Although the girls couldn't be more different personality-wise, a series of calamities brings them closer together. Aunt Hane's Nieces is a delightful read for fans of classic young adult fiction.

Aunt Jane's nieces go to work campaigning for their cousin who is running for Congress against a powerful incumbent, and solve a mystery along the way.

Uncle John buys a farm out in the country where Aunt Jane's nieces investigate the mystery of the former owner.

Aunt Jane's nieces make their debuts in New York's Fashionable Society and solve a mystery.

Out in Hollywood, Aunt Jane's nieces look into producing films for children, a venture Uncle John is proud to support. They also try to prove the innocence of an accused jewel thief.