Identifying Indigenous Nations communities: https://www.whose.land/en/about and https://native-land.ca
Glengarry County, Ontario Genealogy – this excellent site from FamilySearch lists an extensive number of links to sites: civil registration, census records, church records, cemetery records, etc.
Glengarry County Archives – “…contains the foremost collection of history about Glengarry County found anywhere.” An important part of the collection is the Glengarry County Newspapers collection which is searchable.
Glengarry County Pioneer History – a wealth of links to a variety go Glengarry information.
Glengarry County GenWeb – a variety of resources (not recently updated but some valuable resources nevertheless).
Glengarry Historical Society – website contains Links page contains many links to a litany of historical sites/websites in Glengarry or connections to Glengarry.
Glengarry Resources – wide collection of Glengarry family histories, cemetary indexes and more.
Cemeteries in SDG – Find a Grave
SDG and Cornwall Newspaper and Photo Digitization Project