of the Public Library Association in 1891. He maintained his residence in Winchester, Massachusetts, for some years, and from 1895 to 1906 served as a member of its water and sewer board. He is the author of several papers on steam power, water power, ventilation of industrial properties, mill construction, etc. His Notes on Mill Construction (1886) was used as a textbook at MIT. He is the originator of numerous devices and inventions, notably of a receiver pressure register for compound engines, which he perfected in 1884. Main was a member of the American Society of Civil Engineers and the American Society of Mechanical Engineers of which he was president. He received a gold medal from the ASME in 1935. He was president of the Boston Society of Civil Engineers in 1912 and drafted a code of ethics during that time which was a first for engineering societies. He was a member of the National Association of Cotton Manufacturers, the New England Water Works Association, and the Corporation of the Massachusetts Institute of Technology. He was also a member of the Society of Arts of Boston, the Exchange Club of Boston, Engineers' Club of Boston, and Technology Club of Boston, the Engineers' Club of New York, and the Calumet Club of Winchester. Family On November 14, 1883, he married Elizabeth F. Appleton, of Somerville, Massachusetts. They had three children: Charles Reed, Alice Appleton, and Theodore Main. He died at his home in Winchester, Massachusetts on March 6, 1943. Notes References 1856 births 1943 deaths People from Marblehead, Massachusetts Phillips family (New England) Massachusetts Institute of Technology alumni Engineers from Massachusetts ASME Medal recipients