The Age of Concrete and the Use of Pre-Cast Concrete Building Units.
Allentown, PA: Lehigh Portland Cement Co., n.d. (ca. 1925). Original edition. Pamphlet. 3.25" x 6", pp. 15. Illustrated with b/w photos and drawings. An interesting and scarce pamphlet promoting the use of pre-cast concrete building and landscaping material. Nicely illustrated. More