Plantation of Cyr - Provides brief history, facts, address, and list of town officials. - http://www.maine.gov/local/aroostook/cyr_plt/
1860 US Census, Aroostook County - Census statistics for Township Letter L, now know as Cyr Plantation. - http://www.upperstjohn.com/1860/letterl-1.htm
Acadian Genealogy: From France to the Cyr Plantation - Timeline and history of the Acadians arrival in the Madawaska area. Also includes information about the Cyr family and their settlement of Cyr Plantation. - http://www.acadian.org/cyrplant.html
History of Cyr Plantation - Brief historical description, census information, and links available. - http://www.upperstjohn.com/aroostook/cyr.htm