The father and son architectural firm of T.J. Tolan & Son and later Brentwood S. Tolan designed seven county courthouses in Indiana, more than any other architectural firm but one. The Tolan firm also designed courthouses throughout the Midwest. Little is known about these architects, except that neither was formally trained. However, the Tolans designed high caliber courthouses that are viewed as some of the best in the state. Using primary and secondary sources, this thesis is an assessment of the courthouses constructed in Indiana by the architectural firm T.J. Tolan & Son and by Brentwood S. Tolan in the context of courthouses constructed in Indiana from the same period. / Department of Architecture