This work reproduces the extensive documentation of the organ undertaken by the organ builders Marcussen & Søn in 1940, including all drawings and measurements in full size. Documentation from organ builder Th. Frobenius & Sons’ restoration of the bellows in 1981–82, along with important documents from Cavillé-Coll’s restoration in 1895, are also represented.

The book is printed in two languages (Danish and English).