Monona County, Iowa

Garretson Outlet Bridge (Bridge) [Map]
Co. Rd. K64 over Garretson Outlet Ditch, Whiting, Iowa

Jones Creek Watershed Historic District (District) [Map]
Between Little Sioux and Soldier Rivers, SW of Moorhead, Moorhead, Iowa

Mann School No. 2 (School) [Map]
Oak Ave, 3.5 mi. NW of Preparation Canyon State Park entrance, Moorhead, Iowa
Also known as: Sioux Township # 2

Monona County Courthouse (Courthouse) [Map]
Iowa Ave., Onawa, Iowa

Newell A. Whiting House (House) [Map]
1106 Iowa Ave., Onawa, Iowa
Also known as: John R. Murphy House

Onawa IOOF Opera House (Building) [Map]
1023 Tenth Ave., Onawa, Iowa
Also known as: Onawa Opera House

Onawa Public Library (Library) [Map]
Iowa Ave. and 7th St., Onawa, Iowa

Round Barn, Cooper Township (Commercial building) [Map]
IA 141, Mapleton, Iowa

Trinity Memorial Episcopal Church (Church) [Map]
302 S. Seventh St., Mapleton, Iowa