History ▁of ▁Christ ▁Church ▁ 1 7 9 6 – 1 8 4 8 ' ▁retained ▁in ▁the ▁c athedral ▁arch ives . ▁ ▁Organ ▁▁ 1 8 1 4 ▁- unknown ▁organ ▁installed . ▁ 1 8 4 8 ▁- ▁" un comm only ▁large " ▁organ ▁by ▁Henry ▁Er bern , ▁New ▁York . ▁▁ 1 9 th - century ▁B ark hoff ▁organ ▁ ▁The ▁present ▁organ ▁was ▁built ▁by ▁Walter ▁Hol tk amp ▁Sr . ▁of ▁Cleveland , ▁Ohio . ▁The ▁organ ▁is ▁an ▁out standing ▁example ▁of ▁the ▁" American ▁classic " ▁ideal ▁set ▁forth ▁during ▁a ▁ 3 0 - year ▁period ▁beginning ▁in ▁ 1 9 3 0 ▁by ▁G . ▁Donald ▁Harrison ▁of ▁A e ol ian ▁Sk inner , ▁Boston ▁and ▁Walter ▁Hol tk amp . ▁The ▁organ ▁is ▁designed ▁to ▁play ▁the ▁entire ▁re per toire ▁convin cing ly , ▁lead ▁con greg ational ▁h ymn ▁singing ▁and ▁accomp any ▁the ▁unique ▁sound ▁of ▁the ▁C athedral ▁cho irs . ▁ ▁The ▁organ ▁includes ▁several ▁different ▁and ▁color ful ▁fl ute ▁stops , ▁gener ously ▁scale d ▁and ▁clear ▁vo iced ▁princip als , ▁broad ▁and ▁bold ▁re ed ▁tone ▁and ▁warm ▁strings . ▁The ▁ped al ▁division ▁includes ▁five ▁stops ▁at ▁six teen ▁foot ▁pitch . ▁ ▁In ▁ 1 9 9 9 , ▁the ▁Hol tk amp ▁Organ ▁Company , ▁completely ▁renov ated ▁the ▁console , ▁added ▁solid ▁state ▁combination ▁action , ▁re le ather ed ▁the ▁electro - p neum