A resolutely private person, Cather had destroyed many old drafts, personal papers, and letters, asking others to do the same. While many complied, some did not. Her will restricted the ability of scholars to quote from the personal papers that remain. But in April 2013, "The Selected Letters of Willa Cather"—a collection of 566 letters Cather wrote to friends, family, and literary acquaintances such as Thornton Wilder and F. Scott Fitzgerald—was published, two years after the death of Cather's nephew and second literary executor, Charles Cather. Willa Cather's correspondence revealed the complexity of her character and inner world. The letters do not disclose any intimate details about Cather's personal life, but they do "make clear that primary emotional attachments were to women." The Willa Cather Archive at the University of Nebraska–Lincoln works to digitize her complete body of writing, including private correspondence and published work. As of 2021, over 2,100 letters have been made freely available to the public, in addition to transcription of her own published writing.