Karen Rinaldi, formerly EVP, publisher and general manager of Rodale Books, and publisher and managing director of Bloomsbury US, will join the Harper imprint of HarperCollins as SVP and executive editor, starting April 16th.

Katy Hershberger has been promoted from publicity manager to director of publicity for Bloomsbury Kids.

Charles Harmon, formerly v-p and director of publishing at Neal-Schuman Publishers, will join the Rowman & Littlefield Publishing Group on April 9 as executive editor.

John Lalor has been appointed v-p of retail and special sales for National Geographic's Books division. He was most recently director of sales and custom publishing at Regnery Publishing.