How to Find a Duke in Ten Days by Grace Burrowes et al

For centuries, the volumes of a priceless Renaissance manuscript, The Duke’s Book of Knowledge, have been the subject of legend and rumor. Three members of London’s Bibliomania Club have promised a beloved professor they’ll find the manuscripts before the professor retires. They are determined to vindicate his faith in the Duke’s existence while rescuing a great literary work from obscurity. The problem? The book must be found in ten days. Matters of the heart intrude as each book hunter realizes that locating an ancient manuscript might just lead to happiness ever after.

The Will to Love by Grace Burrowes
His lordship has been looking for a rare manuscript in all the wrong places, but he might just find true love!

How to Steal a Duke (in Ten Days, Give or Take a Few Days, But Definitely in Less than a Fortnight) by Shana Galen
A haughty duke and an impoverished lady turned cat burglar travel to the wilds of Cornwall in search of a castle, a mad earl, and an arcane manuscript.

The Viscount’s First Kiss by Carolyn Jewel
Viscount Daunt and the painfully shy Magdalene Carter turn friendship into love in their search for a legendary medieval manuscript.