Collection search - Niagara, Sketch of the Military Reserves extending from Chippewa to the debouché of the Niagara River into Lake Ontario, distinguishing in yellow such part of "the One Chain" in width on the top of the bank, as may be surrendered to the Provincial Governement, the remainder tinted red being actually required for purposes of defence. As called for by the Military Secretary's letter, dated, 16th May 1850. R.I. Pilkington, Draftsman, Hd, Qr. Roy'l Engr. Office. 21st May 1850. [cartographic material]