O. Henry Memorial Award Prize Stories of 1919
O. Henry Encore
O. Henryana: Seven Odds and Ends, Poetry and Short Stories
Of Time and Texas
Of the Just Shaping of Letters
Of the Injustice of Counterfeiting Books
Of the Decorative Illustration of Books Old and New
Of the Capture of Ticonderoga: His Captivity and Treatment
Of Stegner's Folly
Of Natural and Supernatural Things
O'Flaherty V.C.: A Recruiting Pamphlet
Of Human Bondage
Of High Descent
Of Gardens: An essay
Off to the Wilds: Being the Adventures of Two Brothers
Off to Sea: The Adventures of Jovial Jack Junker on his Road to Fame