7 books
Constantinople, Vol. 1 of 2 (Classic Reprint)
Constantinople, Vol. 2 of 2 (Classic Reprint)
Constantinople
The Hippodrome of Constantinople
Androniké the heroine of the Greek Revolution
The Races of Europe; An Account Which Removes the Padlock of Technicality from the Absorbing Story of the Mixture of Peoples in the Most Densely Populated Continent
The Middle Ages