Maybe David Letterman's next career should be as an author.

The "Late Show" host, scheduled to step down in 2015, is a finalist for this year's Thurber Prize for American Humor. Letterman and illustrator Bruce McCall have been nominated for their satirical picture book "This Land Was Made for You and Me (But Mostly Me)."

Past winners have included David Sedaris, Christopher Buckley and "The Daily Show" host Jon Stewart.

Letterman's fame sets him apart from the this year's other nominees, and so does his employment. He is the only finalist not affiliated with The New Yorker.

Get Breaking News Delivered to Your Inbox

The other nominees announced Thursday for the $5,000 prize were magazine contributors Liza Donnelly for "Women On Men" and John Kenney for "Truth In Advertising." The award will be presented Sept. 30.

"The Secret Life of Walter Mitty" author James Thurber, for whom the prize is named, was himself a New Yorker humorist.

"The Late Show with David Letterman" airs weeknights at 11:35 p.m. ET on CBS.