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
Cass Building in a specially designed framing system that is almost invisible at first glance. The edges of the panes of glass comprise the wall abut giving the appearance of one sheet with no support. Four adjacent panes are fastened at their corners by an x-shaped bracket. The architectural firm relocated its offices in the early 1990s and the structure currently houses several employment agencies, daycare providers and Neighborhood Legal Services, which focus on meeting the needs of local Detroit residents. Detroit People Mover Station Fort/Cass is one-block east across Fort Street from the building and Cobo Center is one block south.