Historical Fiction:
* "The Last of the Mohicans" (1902) - A novel retelling the story of James Fenimore Cooper's classic, often considered a more faithful adaptation.
* "The History of the United States" (1915) - A comprehensive historical narrative.
* "A History of the World" (1918) - A concise overview of world history.
* "The American Nation: A History" (1920) - Another comprehensive history of the United States.
* "The First American" (1920) - A fictionalized biography of Christopher Columbus.
* "The Last Days of Pompeii" (1923) - A retelling of Edward Bulwer-Lytton's classic novel.
* "The Last of the Vikings" (1924) - A fictionalized account of the Viking age.
* "The Romance of Exploration" (1926) - A collection of stories about famous explorers.
Biographies:
* "Abraham Lincoln: A Short Life" (1915) - A brief biography of the 16th President of the United States.
* "George Washington: A Short Life" (1917) - A brief biography of the 1st President of the United States.
* "The Life of Napoleon Bonaparte" (1919) - A biography of the French emperor.
Other Works:
* "The Story of the Great War" (1920) - A narrative account of World War I.
* "The Conquest of Mexico" (1922) - An account of the Spanish conquest of Mexico.
* "The Conquest of Peru" (1923) - An account of the Spanish conquest of Peru.
George Pierce Hays was a prolific writer who produced numerous works of history and fiction. His works were popular in their time and provided readers with engaging accounts of historical events and figures.