Tiré de l'annuaire Lovell de Montréal et sa région de 1910-1911, page 267

Mayo, a post settlement in Labelle co., Qué., 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. 300.