Original old architectural vintage catalog THE VORTEX MANUFACTURING COMPANY. Dens-Tect and Par-Lock plaster treatments. Asphalt compounds used are blended of natural asphalts to produce the specific physical qualities necessary to meet the requirement of each type of service. Specifications are given. Main office was located at 1978 West 77th Street, Cleveland, OH. This 1933 unique 2 page building construction catalog contains a small amount of residual glue, and the pages are loose. There are damp stains on page edges. It would make a marvelous addition to your engineering library.
- SKU ze981
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