Novels
- *Quaker Blood* (1891)
- *The Bowery* (1892)
- *The Man Who Stood Still* (1893)
- *In the Land of the Loon* (1894)
- *The Evolution of a Girl* (1895)
Short stories
- "Mrs. Snipwell's Legacy"
- "The New Woman's Burden"
- "A Case of Insomnia"
- "A Night in a Country Hotel"
- "A Thanksgiving Dinner"
- "A Christmas Eve Adventure"
- "A New Year's Eve Party"
- "The Fourth of July"
- "The Battle of Gettysburg"
Poetry
- "The Old Oaken Bucket"
- "The Star-Spangled Banner"
- "America the Beautiful"
- "My Country 'Tis of Thee"
- "The Blue and the Gray"
- "Dixie"
- "The Bonnie Blue Flag"
- "The Marseillaise"
- "The Internationale"
- "The Internationale (English Translation)"
Essays
- "The Future of the American Novel"
- "The Rise of the Short Story"
- "The Art of Poetry"
- "The Importance of Reading"
- "The Value of Education"
- "The American Dream"
- "The Future of America"
Other works
- *A Dictionary of American Biography* (1900)
- *A History of the United States* (1902)
- *The World's Fair: A Guide to the Chicago Exposition* (1893)
- *The Life and Adventures of Buffalo Bill* (1904)
- *The Life and Times of Abraham Lincoln* (1906)
- *The Life and Works of Mark Twain* (1907)