Illustrated historical atlas of the county of Norfolk, Ont.
Toronto : H.R. Page & Co., 1877.
The map was scanned from this book as part of the McGill University Canadian County Atlas Digital Project. (See: http://digital.library.mcgill.ca/countyatlas/default.htm)
I downloaded this image of the map from their project website, specifically: http://digital.library.mcgill.ca/countyatlas/Norfolk.htm
In Canada, the copyright of a work lasts the life of the author plus 50 years from the end of the calendar year of death. If the author is anonymous or pseudonymous then the copyright lasts for either 50 years from the publication of the work or 75 years from the making of the work, whichever is shorter.