Collection search - Plan showing alteration in the subdivision part of the Sparks Estate in the City of Ottawa. Charles E. Wolff, P.L. Surveyor. Ottawa, November 8th, 1873, [in pencil] Plan shewing subdivision of lots 12, 13, 14 & 15 on south Wellington Street in the City of Ottawa, the property of the heirs of the late Nicholas Sparks Jr. Prepared by Robert Sparks, P.L.S. Registered...July 10/76. [cartographic material]