Party affiliation: Republican
William Carey Coffin, American engineer, architect. Member council National Civil Service Reform Association, 1908-1918; member Federal Trades Committee of Chamber of Commerce United States of America, 1913-1918; Member American Iron and Steel Institute, Pittsburgh Chamber of Commerce.; Mason (32°).
With Keystone Bridge Company, 1883. Chief engineer Fort Pitt Boiler Works 1883-1885. With Riter-Conley Manufacturing Company, 1885-1908, vice president from incorporation, 1898.
Assistant general sales agent Jones & Laughlin Steel Company, 1909-1915. Vice president Blaw-Knox Company, 1915-1923. Engineer and architect, 1923-1927, is now retired.
Designed and built some of the largest blast furnaces, steel plants and oil refineries in the United States and Canada and secured many large contracts in the United States and foreign countries, including electric power houses in Dublin, Ireland, Glasgow, Scotland, and Bristol, England. Later designed and built several residences at Miami Beach, Florida.