Born in Champlin, Minnesota,[1] Trussell received a B.A. from the University of Minnesota and a law degree from Columbia Law School, entering the practice of law in 1885.[2] Trussell joined the Internal Revenue Department in 1889,[2][3] returning to private practice in 1894, then to government in 1898, and back to private practice in 1916.[2] While again working as a Minneapolis lawyer,[4] he was appointed to the Board of Tax Appeals by President Calvin Coolidge,[3] and was one of the original twelve members appointed to the Board, one of seven appointed "from the public".[5]