Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 379
ESTIMATES. PLANT OF THE WINSLOW BROS. COMPANY, CHICAGO, ILL. Estimates will be gladly furnished and correspondence is invited. Continued on Next Page THE WINSIOW BROS. COMPANY 308 ORNAMENTAL METAL WORK … This illustration shows our Patent Cement and Iron construc-tion for Stairs, fully covered by United States patent ownedand controlled by us. Stairways of this Construction arestrictly fireproof, and for this reason have been approvedby the Building Departments of New York, Chicagoand other Cities.…
Building materials
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