Recording Artist and Author
Professor of Organ Emeritus
University of Nebraska at Lincoln
George Ritchie
"George Ritchie has contributed to the organ profession in a number of significant ways, as a performer, teacher, author, and Bach scholar. Among his recorded legacy is a set of recordings on the Raven label of Bach's complete organ works, documenting several important American organs recently built by American builders. He is coauthor with George Stauffer of the book Organ Technique: Modern and Early, widely used today in the U.S., Canada, and Europe."

Paul Barte, "Interview with George Ritchie - Part 1",

The American Organist, January 2020 (membership required)
J. S. Bach's The Art of Fugue - A 2CD recording with a DVD feature-length documentary and detailed filmed lecture produced and released by Fugue State Films.
"The finest recording of Bach's Art of Fugue irrespective of media or instrument."
Gramophone Magazine (July, 2010).
Link to full review and other reviews here.
Available to order from Fugue State Films (UK site; payment in British pounds; U.S. buyers should specify NTSC DVD rather than PAL version), The Organ Historical Society Online Catalog (U.S. site; payment in US$) and Raven (U.S. site; payment in US$).
On YouTube: Introduction to the Art of Fugue. (This is a 4:20 minute introduction for the 2CD + 1DVD set of The Art of Fugue.) - Music Directory