Cleo F. Garis

Born in 1905, she was the daughter of prolific children's authors Howard R. Garis and Lilian Garis, and she published under the name Cleo F. Garis. Reliable catalog and book sources connect her with three novels in the Arden Blake mystery series: The Orchard Secret, The Mystery of Jockey Hollow, and Missing at Marshlands.

Her fiction belongs to the tradition of early 20th-century girls' adventure and mystery books, but the Arden Blake stories stand out for their college setting and suspenseful atmosphere. Although her published output appears to have been brief, those books remained well known enough to be preserved by major library and public-domain projects.

She was born on June 30, 1905, and died on June 28, 1998. Some book-community sources also identify her as later being known as Cleo Garis Clancy.