In the 1960s, Coit found success writing historical non-fiction for children.
He has also written short stories, biography, other non-fiction and children's books.
He wrote non-fiction and fiction, with some books on international law.
He resigned from the agency in 1995 to concentrate on writing novels and non-fiction.
Throughout her career, Garner has written both fiction and non-fiction.
Garner has written non-fiction from the beginning of her career as a writer.
He has also written several books, both fiction (crime novels) and non-fiction.
Bullock began writing fiction, non-fiction and poetry in the 1980s.
Her early work there determined her career in writing non-fiction.
In later life, she wrote non-fiction, including several biographies that were well received.