By the late 1990s the Holtkamp had been only moderately altered since its installation, with replacement of the Swell Cymbal, new 16ʹ and 8ʹ reeds, and the addition of a 16ʹ-8ʹ-4ʹ Trompeta unit and an electronic 32ʹ Pedal Soubasse. The effect of the 1998 remodeling was detrimental to the acoustics and choral music, with singers struggling to hear not only each other but the organ as well. For an organ to succeed, central placement in the room was clearly required. The Cathedral respectfully felt that moving divisions and revoicing amounted to radical changes that would compromise the Holtkamp organ’s integrity. -- Pipe Organs of Columbus OHS 2022

Updated through online information from Connor Annable.

Updated through online information from Jim Thompson. -- According to the church's music department web page the "Ailing Holtkamp" is to be replaced by Richards, Fowkes & Co. Opus 24 in 2018.

Identified through information published in John Ferguson's Walter Holtkamp: American Organ Builder (DMA treatise, Eastman School of Music, 1976). Although neither Votteler-Holtkamp-Sparling nor their successor Holtkamp Organ Co. assigned Opus numbers to their instruments, this organ was identified in factory documents as Job number 1695. That number appears here as the Opus number of this instrument.