Ferry & Clas was an architectural firm in Wisconsin. It designed many buildings that are listed on the National Register of Historic Places. George Bowman Ferry (1851 - 1918) and Alfred Charles Clas (1859 - 1942) were partners. The partnership was established in 1890. The Book of the Office Work of Geo. B. Ferry and Alfred C. Clas, Architects, Milwaukee, Wisconsin was published in 1895. The partnership was dissolved in 1912.