Until 1938, when it was accredited by the ABA, the law school relied entirely upon local attorneys and judges for its faculty and administration. One of them was Harry Blackmun, a professor at the St. Paul College of Law from 1935 to 1941. Years later, after the merger, Justice Blackmun also served as a Trustee of William Mitchell. Others were Minnesota Supreme Court Justices George Bunn and Oscar Hallam, both of whom served as deans of the law school while on the bench.