They won the Grand Prix at the International Exhibition held in Antwerp, Belgium, in 1930. They built organs around the world, including Canada, the United States, France, the West Indies, South and Central America, South Africa, and Japan. Their organs have been praised by many well-known organists over the last 100 years, including Guilmant, Vierne, Widor, Bonnet, Lemare, Dethier, Courboin, Bingham, and many others who inaugurated and played Casavant organs. Casavant organs are also found in colleges, universities and conservatories in the United States and Canada.