Ruth Edna Kelley (8 April 1893 – 4 March 1982) was an American librarian and author. Kelley was born in Massachusetts, the only child of Charles F. Kelley, a carpenter, and his wife Mary. She grew up in Lynn, Massachusetts, and received a master of arts degree. The Book of Hallowe’en was Kelly’s first book. Her second book, A Life of Their Own (1947), dealt with immortality and spirituality. She died in Marblehead, Massachusetts at the age of 88.

Read more about Ruth Edna Kelley in the Post Scriptum of 'The Book of Halloween'.