Black Sea (155 Subjects)
Gökmedrese (Celestial Madrasah) in Sivas.
Map of Amasya. Numbers 9 and 20 show the Tombs of the Kings of Pontus.
Inscriptions from Bolu, Asia Minor.
4 (bottom): Geologic cross-section of the region between Tosya and Bolu. 5 (top): Geologic cross-section of the region between Bolu and Üsküdar (Istanbul).
Map showing the author's itinerary.