Miracle concrete: the great modern industry (1909)
Miracle Pressed Stone Co. · Miracle Pressed Stone Co. · leaf 17
Special Rock Face. 12-inch Block.Face Plate H-193.Price $7.00. … FROST AND MOISTURE PROOF. The Miracle Block forms a building that is positivelyFrost and Moisture Proof. Why? Because air space is anon-conductor of frost and moisture and because air spacesentirely surround the building. There is nothing directly con-necting the inner and outer surfaces of a…
![An illustration from Current architecture: published in connection with a joint exibition [sic] held in Boston November 1916 (1916)](https://img.insideoutlibrary.com/img/200/ia-currentarchitect1916bost-104-161.webp)
