Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 462
Fig. 1.—Large indirect lighting unit suspended in the auditorium. INDIRECT TUNGSTEN LIGHTING. 433 … Fio. 2.—Slnwiiig indii-ect units for lighting the boxes.
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
