The Sono-phonic was manufactured by Compagnie P.T. Legaré Limitée, Montreal, Quebec. Apparently P. T. Legaré was a large commercial empire in Quebec (known for
farm equipment and knitting machines in particular): http://www.angoravalley.com/csm/legare.html
The following pictures were sent in December 2009 by Chris from Ohio and are of a machine from his wife's family in Quebec.
A Sono-phonic for sale on Facebook Marketplace in 2023.