“Gilbert Hydraulic and Pneumatic Engineering” was written by Carleton John Lynde, PhD and published by the A.C. Gilbert Company of New Haven, Conn., in 1920. In the introduction, A.C Gilbert states, “It is the earnest hope of the authors of this book that the boys who read it will have a better understanding of water and air, how they are used, and what they mean to us.” Filled with diagrams and experiments it is a fun book of applied science and valuable knowledge 100 years ago and now. The A. C. Gilbert Company was an American toy company, once one of the largest in the world, who originated the Erector Set, which is a construction toy similar to Meccano in the rest of the world. First known as the Mysto Manufacturing Company, the company was founded in 1909 in Westville, Connecticut, by Alfred Carlton Gilbert, a magician, and his friend John Petrie, to provide supplies for magic shows. In 1916, the name of the company was changed to the A. C. Gilbert Company. The Gilbert Company had many ventures over the years but struggled after the death of its founder in 1961. Gilbert's family sold its shares, and the company was never profitable under its new ownership. By 1967, Gilbert was out of business. Erector was sold to Gabriel Industries and moved production from Erector Square in New Haven, Connecticut, to Lancaster, Pennsylvania. American Flyer was sold to Lionel.  This book is a must for any collector   This book will ship book rate USPS unless you choose a different shipping method . It comes from a smoke free home