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
Lewis Cass Building The Lewis Cass Building is now a six-story (originally seven-story) U-shaped Classical Revival structure with a flat roof, with a facade of cream-colored sandstone above a granite basement. A cornice separates the second and third floors, forming a base for four-story piasters with Tuscan capitals above. An entablature with cornice runs above the pilasters. As originally built, the building had three arched entrances. After the 1951 fire, two entrances were removed, and the main entrance completely rebuilt as a projecting gray granite entryway. State of Michigan government agencies located in Cass Building: The Lewis Cass Building is getting a first-floor