In addition to publishing collections of fairy tales and folklore and writings about his travels, Curtin translated a number of volumes by Henryk Sienkiewicz, including his "Trilogy" set in the 17th-century Polish–Lithuanian Commonwealth, a couple of volumes on contemporary Poland, and, most famously and profitably, "Quo Vadis" (1897). In 1900 Curtin translated "The Teutonic Knights" by Sienkiewicz, the author's major historic novel about the Battle of Grunwald and its background. He also published an English version of Bolesław Prus' only historical novel, "Pharaoh", under the title "The Pharaoh and the Priest" (1902).