Columbia subject headings:
Post office stations and branches--Turkey--History.
Postal service--Turkey--History.
Harvard subject headings:
Post office stations and branches--Africa--History.
Post office stations and branches--Balkan Peninsula--History.
Post office stations and branches--Middle East--History.
Post office stations and branches--Turkey--History.
Postal service--Africa--History.
Postal service--Balkan Peninsula--History.
Postal service--Middle East--History.
Postal service--Turkey--History.
Princeton subject headings:
Post office stations and branches--Turkey--History.
Postal service--Turkey--History.