Updated through on-line information from David C Scribner. -- Chests contain Nichols & Simpson pneumatic cylinder stop action as do the Swell Engines, which are whiffle-tree pneumatic cylinder.
Identified through information on the Nichols & Simpson web site, and through information from David Scribner on Pipechat June 8, 2007. The organ is prepared for an additional four-stop antiphonal division.
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