Lower Mesopotamia [cartographic material] / from surveys made under the direction of Sir William Willcocks, K.C.M.G., 1909-1911.Willcocks, William, Sir, 1852-1932[1912]"This map is taken from that given in the portfolio of "Plans of the irrigation of Mesopotamia" (no. 2) by Sir Wm. Willcocks ..."From the papers of Oscar Terry Crosby.In lower right corner: Lower Mesopotamia--Willcocks.In upper right margin: Geographiccartographic