I'm seeking information on Harry M. Spring Jr. who may have been born in August 1908 in Bethel, ME and died in 1973 inMA. He was the CHief inspector for the Mutual Boiler Insurance Company of BOston from 1948-1952. He was married to Marjorie Spring and they had one daughter. He authored two books, "The Boiler Operaror's Guide" and "Pressure Vessels for Industry. Any information on his life would be greatly appreciated. Please respond to firstname.lastname@example.org.