"The organ, which fills the large choir gallery, is a work of art, replete in all the modern improvements and accessories; in fact, is in advance of any previous effort in this line of work. It has thirty-one speaking registers, embracing every known tone-color of organ voicing, from the ponderous double open diapason on the great manual to the zephyr-like string tones of the muted violin, and contains a battery of diapasons second to none in the United States. It also contains the speaking register for which the W. W. Kimball Company is world-famed; namely, the vox humana, which so closely resembles the tones of the human voice. The pedal organ contains all the various dynamic tone-forces so much admired in the cathedral organs of Europe" (The Pinnacled Glory of the West).