Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 339
roughthe slab, and bend but not break the steel rods, and tobreak about twenty lenses. The same stone was thendropped from a height of nineteen feet and fourinches, striking on its end at the middle of one endpanel. The effect of the blow was to smash a largehole through the concrete and to bend… … Fic. 15. LU.VFER PRISM No. 60 For Sieel-Concrete Setting, with which light may be diffiused in basements. iontinucd on Next Page PEISM LIGHTS, ETC. 269 AMERICAN LUXFER PRISM COMPANY LUXFER PRISM SHEETS. INSTALLATION.
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