Cogswell, Malcolm. Rev. Walter Roach, 1806-1849: Pioneer Minster at Beauharnois, Chateauguay and St. Louis and Clerk, Montreal Presbytery (Church of Scotland), Moderator of the Synod, 1847-1848, Moderator, Montreal Presbytery, 1848-1849. Montreal: [s.n.], 1991.