Cass Gilbert Minnesota, and the Library of Congress. Cass Gilbert is often confused with Charles Pierrepont Henry Gilbert, another prominent architect of the time. Cass Gilbert designed the famous Woolworth Building skyscraper on Broadway for Frank W. Woolworth, while Woolworth's personal mansion was designed by C. P. H. Gilbert. The Ukrainian Institute building on Manhattan's 5th Avenue is the work of C. P. H. Gilbert, and often incorrectly attributed to Cass Gilbert. Cass Gilbert should also not be confused with his son, architect Cass Gilbert, Jr. Notes Further reading Cass Gilbert Cass Gilbert (November 24, 1859 – May 17, 1934) was a
Charles Champion Gilbert the brother of Union Brig. Gen. Samuel A. Gilbert and uncle to Samuel's son Cass Gilbert. Charles Champion Gilbert Charles Champion Gilbert (March 1, 1822 – January 17, 1903) was a United States Army officer during the Mexican–American War and the American Civil War. Gilbert was born in Zanesville, Ohio. He graduated from West Point in the famed Class of 1846, finishing 21st out of 59 students. His classmates included twenty future Civil War generals, including George B. McClellan, Stonewall Jackson, George Stoneman, Darius N. Couch, and George Pickett. During the Mexican–American War he served in the 3rd U.S. Infantry