Walter, Thomas Ustick. An American architect. He made the designs for the Girard College building which, on its completion in 1847, was pronounced the finest specimen of classic architecture in the United States. His next great work was the breakwater at La Guayra for the Venezuelan Government. In 1851, his design for the extension of the National Capitol at Washington, DC, was adopted. Having been appointed government architect, he removed to Washington, and remained there until the completion of the work in 1865. While in Washington, he also designed the extension of the patent office, treasury, and post office buildings, the dome of the capitol, and the government hospital for the insane. Died 1887.