Updated through on-line information from Gregory Kuklinski. -- I was a student at St. Joe's Prep 1990-1994. I have some more notes to add, but the website will give you tons of information from another fellow Prepper. The organ is still there and playable.
Identified from company publications as edited and expanded in The Hook Opus List 1829-1935, ed. William T. Van Pelt (Organ Historical Society, 1991).