Updated through on-line information from Nicholas J. Will. -- In addition to the Solid State combination action, the original freie kombinationen system (3) has been restored, as well as the roll-schweller. -- The fourth manual, labeled "Echo," was intended to control a separate instrument in the Sanctuary of the Cathedral, which was never built.
Identified through information adapted from E. M. Skinner/Aeolian-Skinner Opus List, by Sand Lawn and Allen Kinzey (Organ Historical Society, 1997), and included here through the kind permission of Sand Lawn:
Repairs by Aeolian-Skinner in 1954 as their Opus 1291.
Status Note: There 1992
Some choir pipework altered in past. Restored 1992 by Columbia Organ Works.