Building 1: State Bank of Wisconsin/Bank of Milwaukee (1856; 1858), Joliet limestone (Illinois)
Building 2: Button Block (1892), red sandstone
Building 3: Loyalty Building (Northwestern Mutual Life Insurance Company Building; 1885), Fox Island and Hallowell granites (Maine) and Indiana limestone
Building 4: Pfister Hotel (1892-1893), Wauwatosa limestone (Wisconsin)
Building 5: Milwaukee Club (1884), red sandstone
Building 6: Old Federal Building (1892-1899), Athelstane (Wisconsin) and Rockville (Minnesota) granites
Building 7: Northwestern National Insurance Company Building (1904-1906), Bedford limestone (Indiana)
Building 8: Wisconsin Gas Building (1929-1931), Rainbow granite (Minnesota) and Kasota limestone (Minnesota)
Building 9: Northwestern Mutual Life Insurance Company Building (1912), Bethel White and Woodbury granites (Vermont)