Robert Mills (1781-1855) was born in 1781 in Charleston, S.C. and studied architecture.
Mills studied at Charleston College and under James Hoban and Benjamin Henry Latrobe. He was a friend of President Thomas Jefferson. Mills was known for design of the Washington Monument, the U.S. Patent Office, and U.S. Treasury, as well as the Washington Monument in Baltimore, Maryland, and hospitals and jails in South Carolina using fireproofing and heating systems he developed.
From the description of Robert Mills family letters, 1813-1847. (Unknown). WorldCat record id: 422874301