Under the name O. Henry, he wrote numerous short stories, including:
* The Gift of the Magi
* The Ransom of Red Chief
* The Last Leaf
* The Furnished Room
* The Cop and the Anthem
* The Cabellero's Way
* A Retrieved Reformation
* The Roads We Take
* A Municipal Report
* Hearts and Hands
He was also a writer of:
* Short story collections such as "The Four Million," "The Gentle Grafter," and "Whirligigs."
* Novels like "Cabbages and Kings" and "The Voice of the City."
Willard H. Porter's real name is rarely used when discussing his work, as O. Henry is so synonymous with his literary output.