Columbia subject headings:
Archaeologists--Germany--Correspondence.
Koldewey, Robert, 1855-1925--Correspondence.
Harvard subject headings:
Archaeologists--Germany--Correspondence.
Babylon (Extinct city)
Koldewey, Robert, 1855-1925--Correspondence.
Koldewey, Robert, 1855-1925--Travel--Germany.
Koldewey, Robert, 1855-1925--Travel--Italy.
Koldewey, Robert, 1855-1925--Travel--Middle East.
Koldewey, Robert, 1855-1925--Travel--Turkey.
Princeton subject headings:
Archaeologists--Germany--Correspondence.
Koldewey, Robert, 1855-1925--Correspondence.