Mormon History, Jul 8, 1845

[Lucy Mack Smith] Lucy's birthday; she thinks she is sixty-nine (actually seventy). She dictates Chapter 44 and the preface after that date.

[source: Anderson, Lavina Fielding, Editor, Lucy's Book: A Critical Edition of Lucy Mack Smith's Family Memoir, 2001, Signature Books, http://bit.ly/lucys-book]