Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 100
No. 94. CAST-IRON TURNTABLETurning on steel balls, which run in machine-turned groove and stop automatically after everyquarter of a turn … No. 96. CAST-IRON PLATE TRACKFor use in boiler rooms and power stations. Withcheckered top to prevent men from slipping
Building materials
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![An illustration from Illustrated catalogue of the extraordinary collection of art treasures and antiquities acquired during the past year by Professore Commendatore Elia Volpi ... to be sold at unrestricted public sale at the American Art Galleries [on Monday, Tuesday and Wednesday afternoon, Dec. 17th, 18th and 19th, 1917] (1917)](https://img.insideoutlibrary.com/img/200/ia-illustratedcatal00volp-350-268.webp)
