Trowbridge & Livingston was an architecture firm based in New York City, active from 1897 to 1925. The firm's partners were Breck Trowbridge and Goodhue Livingston. They were successors to the firm Trowbridge, Colt & Livingston, founded in 1894 but dissolved in 1897 when Stockton B. Colt left the partnership.
Biography from Wikipedia, licensed CC BY-SA 4.0.