Updated through online information from Andrew Henderson.
Originally a conservative renovation of Casavant, Op. 811. Altered over the years as follows: Swell Mixture added 1960 (Casavant) and electronic harp stop (Maas-Rowe -- now disconnected); second set of chimes added on rear wall of sanctuary (1972); Great upperwork and various tonal alterations, c. 1982 (Dubay Organ Co.); 8-level SSL combination action and adjustable crescendo pedal added 1987 (Dodington & Dodington); reeds rebuilt 1988 (Dodington & Dodington); digital stops added 1998 & 2014 (Walker, via Dodington & Dodington). (Database Manager. 2016-07-26)
Mechanical and tonal changes by Dubay in the 1980s, with subsequent Walker digital additions.