Straub Cinder Building Blocks.
Philadelphia, PA: Nat'l Cinder Conc. Products Assoc. 1925. First edition. Decorated Boards w/cloth backstrip, brown & tipped-in title. Large quarto, pp 208. 120 pages of b/w photographs on concrete masonry buildings, & finish charts, followed by underwriter's laboratories tests and other technical data. 6 pages of "blue prints" showing details..... More