The Black Abbot by Edgar Wallace. Published by Zarubezhnaya Biblioteka, Shanghai, ca. late 1920s to 1930s. In Russian. Softcover. With ex libris stamps of the previous owner. Richard Horatio Edgar Wallace, 1875 to 1932, was a British writer of sensational detective, gangster, adventure, and sci-fi novels. Antiquarian Librarian Books For Collectors, Russian Emigre Publications.