The Wisconsin Historical Society has published some Civil War-era letters written by members of Laura Ingalls Wilder’s family, including one by Caroline Quiner Ingalls (Laura’s mother) to her sister Martha (who was named after “my” Martha, Laura’s great-grandmother).
I haven’t had a chance to read the letters yet—just got the announcement—but it sounds like at least one of them mentions Charlotte, Laura’s grandmother. This batch of letters wasn’t among the family archive material the Laura Ingalls Wilder estate gave me when I was researching the Martha and Charlotte books, so this is new and exciting stuff for me too.
The long letter from Aunt Martha to Laura full of anecdotes about the Quiner children’s early years isn’t among these. It was written after Caroline’s death and was an important source of information for Maria Wilkes during her writing of the Caroline books. I’d love to see that one published some day. I have a copy somewhere in my files, but I think the original belongs to the Ingalls Wilder estate—or possibly one of the museums? There are Laura-related treasures in many of the home sites and museums that celebrate her work and life.