Tiré de l'annuaire Lovell de Montréal et sa région de 1915-1916, page 260

Mayo, a post settlement in Labelle co., on the Blanche River, 9 miles from Thurso Station, on the C.P.R. It contains 1 Roman Catholic church, 2 saw mills and 1 single grooving and planing factory. Pop. 45.