This slim volume is the best introduction available. This series is heavily revised and updated with every edition, so try to find the newest one you can – 1976 is the original edition.
Rose Wilder Lane
by Rose W. Lane; Roger Lea MacBride
Publication Date: 1991-01-01
This widely owned biography is actually a novel Lane wrote loosely based on her life that MacBride changed a few details in to bring it a little closer to Rose’s actual life up to approximately 1920. Versions of the novel were also published as "Bachelor Girl" and "Diverging Roads" by Rose Wilder Lane.
These are books about Rose Wilder Lane.
The Ghost in the Little House
by William Holtz
Publication Date: 1993-05-01
Up to this point the only true scholarly biography of Lane, it reintroduced her to the scholarly world.
Becoming Laura Ingalls Wilder
by John E. Miller
Publication Date: 2006-01-31
This Wilder biography also serves to balance some of the claims made in Holtz’s work. If you read one, read both.
Black Lambs and Grey Falcons
by John B. Allcock (Editor); Antonia Young (Editor); Valerie Alia
Publication Date: 2000-12-01
Features a chapter on Rose and Albania.
Dorothy Thompson and Rose Wilder Lane
by William Holtz (Editor)
Publication Date: 1991-04-01
The Lady and the Tycoon
by Roger Lea MacBride
Publication Date: 1973-01-01
A Little House Sampler
by Laura Ingalls Wilder; Rose W. Lane; William T. Anderson (Editor)
Publication Date: 1995-04-14
A Little House Reader
by Laura Ingalls Wilder; William T. Anderson; Dan Andreasen (Illustrator)
Publication Date: 1998-02-28
The Rediscovered Writings of Rose Wilder Lane
by Amy Mattson Lauters (Editor, Introduction by)
Publication Date: 2007-03-09
Rose Wilder Lane's San Francisco
by Trini Wenninger
Publication Date: 2005
Travels with Zenobia
by Rose W. Lane; Helen D. Boylston; William Holtz (Editor)
Publication Date: 1983-04-01
Writers of Conviction
by Julia Ehrhardt
Publication Date: 2004-02-22
A Wilder Rose
by Susan Wittig Albert
Publication Date: 2015-03-17
An authorized fictionalization of Rose Wilder Lane's diaries.
Libertarians on the Prairie
by Christine Woodside
Publication Date: 2016-09-06
A book that argues Rose Wilder Lane and her political beliefs were the driving force behind the "Little House" books.
by Caroline Fraser
Publication Date: 2017-11-21
A Pulitzer Prize winning biography by the scholar behind the "Library of America" edition of Wilder's books. While nominally about Laura, it has a major focus on her daughter Rose Wilder Lane.