 Muenich embarked upon an extensive building campaign , for which he retained Omaha architect Jacob M. Nachtigall . Born in Germany in 1874 , Nachtigall had immigrated to the United States with his family in 1883 . Initially working as a <unk> in Omaha , he had served as a draftsman for that city 's 1898 Trans @-@ Mississippi and International Exposition . He had then worked as a draftsman for Omaha architect Thomas Rogers Kimball from 1900 to 1908 ; during this time , Kimball had designed the city 's St. Cecilia 's Cathedral . In 1909 , Nachtigall had opened his own architectural office . 
