Jay, I found the following elsewhere on the Glengarry board and sent a request to the link, but haven't heard back yet.
Lot D on the 1874 map is in 1st Conc. Front mostly and the owner in 1874 was Alex Dingwall which links nicely to the 1786 listing of James Dingwall in that area, though the original lots were not numbered or lettered for some reason.
Re: McNiff's Map
evelyngoulet (View posts) Posted: 2 Dec 2011 8:37AM
I purchased this CD for $10 which is an index and includes maps - McNiff's Map. Certainly worth the money.http://www.kipp-blake-families.ca/McNiff.htm
Host, Glengarry County Genweb
Castle Tioram Finlaggan Councillor
Clan Donald International