To celebrate Harlequin's 60th birthday, Harlequin has 16 books (one from each NA line) available for a FREE download. The total value of all of the books is $60. The Harlequin Historical book is Elizabeth Rolls His Lady Mistress which is an excellent read. There is also a Love Inspired Historical by Jillian Hart. You can get them here.
You will need Abode 9 to read them.