Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 374
been the aim to make this a thoroughly satisfactory elevator door, withoutspecial regard to cost. Its v^ide use has sufficiently demonstrated its value and econ-omy. These doors have been used extensively in office buildings, department stores,hotels and wherever it is desired to provide for the…
Building materials
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