Blaw-Knox Company (Pittsburgh, Pa.) · Blaw-Knox Co. · leaf 16
Fig. 13. Blaw Light Wall Forms, three course method, Miami, FloridaGeorge W. Clark, contractor Sixteen BLAWFORMS FOR LIGHT WALLS AND FOUNDATIONS … Fig. 14. Blaw Light Wall Forms on house foundations, Hartford, Conn. H. E. Putnam, contractor
Building materials · Concrete · Formwork
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