A letter and a report, dated 21/07/2011, from the National Trust of Australia ( Victoria), regarding the decision by the Trust to classify the J. W. Wolff Pipe Organ due to its historical cultural and aesthetic significance. The organ is installed at St Aloysius Catholic Church, Balaclava Road Caulfield. The report includes black and white photographs of varying sizes, a list of references and the history of the Pipe Organ and the Church as well as reasons for considering the organ significant.j. w. wolff pipe organ, caulfield south, o’brien john aloysius fr., national trust register, wolff johann wilhelm, steward chris, st aloysius church, moriarty bartholemew, maidment john, balaclava road, lavers keith m, catholic church, caulfield, weber horace, gothic (revival) architecture, architectural features, architectural styles, organs, germany community, finials, manufactured objects, musical instruments, woodworking, electric apparatus, craft working, craft workers