- First Unitarian Church (1891), 1009 E. Ogden Ave., Milwaukee, WI (Ferry & Clas) NRHP-listed[1]
- Pabst Mansion (1892), 2000 W. Wisconsin Ave., Milwaukee, WI (Ferry & Class) NRHP-listed[1]
- Central Library (1895), 814 W. Wisconsin Ave., Milwaukee, WI (Ferry & Clas) NRHP-listed[1]
- Mrs. Willis Danforth house (1897), 819 N. Cass St., Milwaukee, a 2.5-story house with half-timbering in the gable end (a Tudor Revival decoration). Contributing building in 1986-NRHP-listed Cass-Wells Street Historic District.[6][7]
- L. D. Fargo Public Library (1899-1902), 120 E. Madison St., Lake Mills, WI (Ferry & Clas) NRHP-listed[1]
- Nye House (1901-12 remodel into Georgian Revival style), 1643 N. Nye Ave., Fremont, NE (Ferry & Class) NRHP-listed.[1][8][9] Now houses the Louis E. May Museum and Dodge County Historical Society.[10]
- Charles Danforth house (1904), 823 N. Cass St., Milwaukee, a 2.5-story house in Dutch Colonial Revival style, signaled by the gambrel roof. The walls are a distinctive dark brick. Charles was a salesman. In Cass-Wells Street Historic District.[11][7]
- Brittingham Park Boathouse (1909-1910), N. Shore Dr., Madison, WI (Ferry & Clas, with John Nolen) NRHP-listed[1]
- Hiram Smith Hall and Annex, 1545 Observatory Dr., Univ. of WI, Madison, WI (Ferry & Clas) NRHP-listed[1]
- Jackson District Library, 244 W. Michigan St., Jackson, MI (Ferry & Clas) NRHP-listed[1]
- Knapp–Astor House, 930 E. Knapp St. and 1301 N. Astor St., Milwaukee, WI (Ferry & Clas) NRHP-listed[1][12]
- Saint James Court Apartments, 831 West Wisconsin Ave, Milwaukee, WI (Ferry and Clas) NRHP-listed[1]
- Sauk City High School, 713 Madison St., Sauk City, WI (Clas, Alfred C.) NRHP-listed[1][13]
- Sauk County Courthouse, 515 Oak St., Baraboo, WI (Ferry & Clas) NRHP-listed[1]
- Franklyn C. Shattuck House, 547 E. Wisconsin Ave., Neenah, WI (Ferry & Clas) NRHP-listed[1]
- Cathedral of St. John the Evangelist, 812 N. Jackson St., Milwaukee, WI (Ferry & Clas) NRHP-listed[1]
- State Bank of Wisconsin, 210 E. Michigan St., Milwaukee WI (Ferry & Clas) NRHP-listed
- State Historical Society of Wisconsin, 816 State St., Madison, WI (Ferry & Clas) NRHP-listed[1]
- Tripp Memorial Library and Hall, 565 Water St., Prairie du Sac, WI (Ferry & Clas) NRHP-listed[1][14]
- Jacob Van Orden House, 531 4th Ave., Baraboo, WI (Ferry & Clas) NRHP-listed.[1][15] Currently houses the museum of the Sauk County Historical Society.[16]
- Joseph Vilas Jr. House, 610-616 N. 8th St., Manitowoc, WI (Ferry & Clas) NRHP-listed[1]
- Wisconsin State Reformatory, SE corner of Riverside Dr. and SR 172, Allouez, WI (Ferry & Clas) NRHP-listed[1]
"Goll House" (PDF). City of Milwaukee. February 2002. Retrieved May 23, 2024.