There are 2 books in the Historical Proper Romance series.
The Historical Proper Romance series does not have a new book coming out soon. The latest book, The Lady of the Lakes (Book 2), was published in January 2017.
The first book in the Historical Proper Romance series, Forever and Forever: The Courtship of Henry Longfellow and Fanny Appleton, was published in April 2016.
The Historical Proper Romance series primarily falls into the Historical Romance genre.