With R. M. Hunt, architect, 1875-1877. Private practice architecture, 1877-1929. Secretary Oratorio Society of New York, 1881-1917.
Founder Society for Publication of America Music, 1919. Principal works include: Harlem Young Men’s Christian Association, 1888. (with Adler and Sullivan) Carnegie Hall (his greatest success, 1 of most acoustically perfect auditoriums in world), 1891.
Princeton (New Jersey) Inn., 1893. Author: Practical Lessons in Architectural Drawing, 1881. The City Residence, Its Design and Construction, 1890.