3https://digitalarchive.tpl.ca/internal/media/dispatcher/1826660/fullCatalogue and price list of the Hart Emery Wheel Company, Hamilton, Canada : manufactures of the celebrated Hart's patent solid emery and corundum wheel1886A. Lawson & Co.Bookhttps://digitalarchive.tpl.ca/objects/197871/rdfhttps://digitalarchive.tpl.ca/internal/media/dispatcher/2147685/fullCounty of Halton gazetteer and directoryn.d.A. Lawson & Co.Bookhttps://digitalarchive.tpl.ca/objects/355337/rdfhttps://digitalarchive.tpl.ca/internal/media/dispatcher/1826858/fullSutherland's City of Hamilton and County of Wentworth directory1868A. Lawson & Co.Bookhttps://digitalarchive.tpl.ca/objects/198069/rdf