He used some such expression in the text of an unpublished essay that I later found at Harvard.

(An anthology of ten previously unpublished essays on what Jesus has to do with philosophy.)

Anatomy of Restlessness was published in 1997 and is a collection of unpublished essays, articles, short stories, and travel tales.

He was shown unpublished essays and given his own room to work in.

A less common form of compilation thesis is an essay thesis, comprising previously unpublished independent essays.

"I lived, ate, and slept Vietnam," Holbrooke wrote in an unpublished 1992 essay.

The prize is awarded to the best original, unpublished essay in the history of natural history.

Her view, expressed in the unpublished essay "Negritude, So What!"

It showcases previously unpublished essays on a variety of styles, from polemic to ode to memoir.

He left behind numerous unpublished essays and writings.