- American authors contemporary to O. Henry include F. Scott Fitzgerald, Charlotte Perkins Gilman, Claude McKay, Zora Neale Hurston, or Mark Twain.
- Through the Shadows with O. Henry is a book written by Al Jennings, a former train robber who met and became friends with Henry while living in Honduras.
- Throughout his stories, Henry often alludes to classic works and authors, including Dante, and the Middle Eastern folk tale collection One Thousand and One Nights.
- In the Day 4 classroom activity, "A Harlem Tragedy: Henry's Dangerous Depiction of Domestic Violence", students engage with Virginia Woolf's famous essay, "A Room of One's Own" as an example of a female voice exploring...
