1905
Great Britain. General Staff. Topographical Section.
1876
CHAILLÉ-LONG, Charles Bey
1885
Simon Schropp (J.H. Neumann)
1894
PRÉVILLE, A. de.
1896
NYS, Fernand.
1871
JONVEAUX, Émile.
1908
Great Britain. General Staff. Topographical Section.
1896
BROWN, Robert M.A., Ph.D
1890
STANLEY, Henry Morton Sir, G.C.B
1875
JONVEAUX, Émile.