, built 1909-1915]]
, built 1905-1910]]
Their works include:
- 110 Livingston Street , Brooklyn , New York , former Elks Lodge , and former headquarters of the New York City Department Of Education
- 998 Fifth Avenue , New York City
- The Agricultural Building at the World Columbian Exposition ( 1893 , Chicago, Illinois )
- American Academy In Rome (Main Building)
- John F. Andrews Mansion , 32 Hereford Street, Boston, Massachusetts
- Isaac Bell House , Newport, Rhode Island
- Bellevue Hospital Center
- Boston Public Library , Boston
- Brooklyn Museum , Brooklyn, New York
- The Cable Building, 611 Broadway 1892, New York City
- Century Club , New York City
- , Philosophy Hall , John Jay Hall , Hamilton Hall
- Harvard Club Of New York , New York
- Johnston Gate , Harvard University , Cambridge MA.
- James Farley Post Office (often regarded as the architectural twin of New York City’s Pennsylvania Station)
- Faunce House (then Rockefeller Hall), Brown University , Providence, Rhode Island (1904)
- Fayerweather Hall , Amherst College , Amherst, Massachusetts , ( 1890 )
- The Garden City Hotel , Garden City, New York
- Grand Army Plaza , Brooklyn, New York
- Hall Of Fame For Great Americans at Bronx Community College (formerly New York University )
- Harbor Hill on Long Island, New York , built 1899-1902, destroyed 1947.
- Hill-Stead, estate of Alfred Atmore Pope, designed in collaboration with Theodate Pope Riddle (now known as Hill-Stead Museum ), Farmington, Connecticut
- Hotel Pennsylvania
- Levermore Hall, Blodgett Hall, and Woodruff Hall, Adelphi University , Garden City, New York
- Liggett Hall, Governors Island , New York
- Lullwater Bridge , Prospect Park , Brooklyn , New York
- Madison Square Garden II at Madison Square , New York City (the second of four buildings known by this name)
- The Manhattan Municipal Building , 1 Centre Street, New York City
- Maryland Monument , Lookout Hill , Prospect Park , Brooklyn , New York
- Cyrus McCormick summer estate, shingle-style Richfield Springs, New York (1882; razed 1957)
- Metropolitan Club , 1 East 60th St, New York City
- Morgan Library , New York City
- Milwaukee County Courthouse , Milwaukee, Wisconsin (1931)
- The Minneapolis Institute Of Arts , Minneapolis, Minnesota
- Narragansett Pier Casino , Narragansett, Rhode Island
- Newport Casino , Newport, Rhode Island
- Omaha Building , Omaha, Nebraska (originally the New York Life Building) Bluffton University Digital Imagine Project
- Old Cabell Hall, Cocke Hall, and Rouss Hall, University Of Virginia , Charlottesville
- Olin Memorial Library , Wesleyan University , Middletown, Connecticut
- Parade Place , Lookout Hill , Prospect Park , Brooklyn , New York
- Park Circle granite fixtures, Prospect Park , Brooklyn , New York
- Pennsylvania Station , Newark, New Jersey
- Pennsylvania Station , New York City (above-ground structure destroyed in 1965)
- Peoples State Bank, Detroit, Michigan
- Peristyle , Prospect Park , Brooklyn , New York
- Prison Ship Martyrs' Monument , Brooklyn, New York
- Racquet And Tennis Club , New York City
- Rhode Island State House , Providence, Rhode Island
- Rosecliff , Newport, Rhode Island
- Savoy-Plaza Hotel New York City
- University Club Of New York , New York City
- University Cottage Club Princeton University , Princeton, New Jersey
- Villard Houses , 451 Madison Avenue, New York City
- Walker Art Building, Bowdoin College , Brunswick, Maine , ( 1894 )
- Washington Arch , Washington Square Park , New York City
- The West Wing and East Wing of the White House , 1600 Pennsylvania Avenue , Washington D.C. - 1903
- The renovation of the Theodore Roosevelt White House , 1600 Pennsylvania Avenue , Washington D.C. in 1903.
- English Building, University Of Illinois At Urbana-Champaign , Urbana, Illinois
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