'Space - acoustical criterions of old and new concert halls', a paper by F. Winkel, 1959(?) Date: 1959(?)
"Staff organization chart of an opera theatre," [by] and copyrighted by Unrah, and prepared by Utzon, [n.d.] Map-Folio 3
'...Stage 1 arbitration on folded slab framework', prepared by M.S. Nicklin, I.M. MacKenzie and O Skipper Neilson [n.d.]
Statement and final recommendations for the Council of the Friends of the Opera house Society, by FWL Esch, 19 June 1957