George Ashdown Audsley 
Art of Organ Building, Vol. 1 [EPUB ebook] 

Volume 1 of the fullest repository on organ building and history in English language. Includes outline of organ history, external design and decoration, internal arrangement and mechanical systems, acoustics and theories of sound-production in organ pipes, tonal structure and appointment, compound stops of the organ, more. Complete with illustrations, tables, and specifications. "the most significant republication in our field for the past twenty years . . . an incomparable, invaluable book." — American Guild of Organists Quarterly.