2https://digitalarchive.tpl.ca/internal/media/dispatcher/2070474/fullElementary arithmetic on the unitary system: intended as an introductory text-book to Hamblin Smith's Arithmetic by Thomas Kirkland, M.A., Principal, Normal School, Toronto, and William Scott, B.A., Mathematical Master, Normal School, Ottawa1877Kirkland, Thomas, 1835-1898Bookhttps://digitalarchive.tpl.ca/objects/314961/rdfhttps://digitalarchive.tpl.ca/internal/media/dispatcher/2101366/fullA treatise on arithmetic1878A. MillerBookhttps://digitalarchive.tpl.ca/objects/329240/rdf