Northwest Room; =Room 5W. References. Volume IX. Volume XII. Volume XIII. Sketch Plan. Sections. North-South. East-West. East Side of Room. North Side of North Wall. Cut across Center of Room. Cut across ... ΟΟ-10 1902, 1903 ΟΟ 745 P 19422 ΟΟ 746 P 19423 ΟΟ 1417 P 20431 ... 1948