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):

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.

A Sono-phonic for sale in Quebec City in 2023.

A Sono-phonic for sale in Levis, Quebec in 2023.

Montreal Star, November 26, 1926, p. 16.

Edmonton Journal, December 6, 1928, p. 24.

Montreal Star, November 15, 1929, p. 27.

Ottawa Citizen, November 22, 1929, p. 5.