This organ, originally built for St. Paul's Roman Catholic Church in Greencastle, IN, was designed to be an adjunct to Opus 48A, a two-manual, seven-voice “Wellesley” style organ in the church’s gallery from 1965.  In his 1964 proposal, Charles Fisk pointed out the difference between the two:

In specification this organ is a little unusual in that it uses an open (tapered) manual foundation stop instead of a stopped flute; this in order to give fullness for hymn accompaniment.  The sound of the organ would also be enough different from that of the gallery organ to be refreshing.  

Opus 52 was later moved to St. Meinrad’s Seminary, St. Meinrad, Indiana, and then in 1995 to Neu Chapel at the University of Evansville, Evansville, Indiana. The organ has been retuned in ¼ comma meantone.

Dr. Douglas Reed, University Organist and Professor of Music wrote of it: 

I use the instrument a great deal for Sunday morning worship, mostly for congregational singing. Whenever I encounter a hymn in a “bad” key, salvation is but a half step away, as Gerre Hancock has often quipped. It is simply amazing how well this 4-stop organ leads/accompanies/supports a congregation of 200-300 people.