Detail from drawing No. 3: Plan of third (top) floor. The floor plan showing the three major galleries under the glazed roofing and the dome or light well. At the rear are the rooms for toning and the solar camera. Reed Henderson & Smart Messrs. Johnstone O'Shannessy & Co Ltd / Collins Street East. 1885 Ink and coloured wash on cartridge paper. LTAD 108/130 No. 3
