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There is a page named "File:Luxfer sidewalk.gif" on Wikipedia
DescriptionLuxfer sidewalk.gif English: Original caption: Fig. 12. BASEMENT VIEW OF TYPICAL LUXFER SIDEWALK INSTALLATION Date 1915 Source Ian Macky at...(298 × 195 (17 KB)) - 23:47, 15 November 2023
caption: LUXFER PRISMS IN USE. Illumination in a basement salesroom by means of prisms in the sidewalk. Date 1902 Source https://glassian.org/Prism/Luxfer/Paper/WSI/page279...(263 × 371 (30 KB)) - 15:47, 31 October 2020
