Unkown

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Altaville Grammar School (Calaveras County, California)
B & B Motor Company Building (Buncombe County, North Carolina)
Bernardo Fernandez House (Contra Costa County, California)
Calaveras County Courthouse (Calaveras County, California)
Dutch Flat Historic District (Placer County, California)
East Brother Island Light Station (Contra Costa County, California)
Griffith Quarry (Placer County, California)
Hercules Village (Contra Costa County, California)
Hosmer Dairy Farm Historic District (Webster County, Missouri)
Jasper Yeates House (Lancaster County, Pennsylvania)
Kemp's Hotel (Berks County, Pennsylvania)
Langstroth Cottage (Butler County, Ohio)
Martinez Historical District (Riverside County, California)
Murphys Grammar School (Calaveras County, California)
North Main Street Historic District (Macon County, Alabama)
Outlet Gates and Gatekeeper's Cabin (Placer County, California)
Peyton Cooke House (Warren County, Kentucky)
Plumas-Eureka Mill, Jamison Mines District (Plumas County, California)
Sawyer House (Monroe County, Michigan)
Sterling, Ella Mahalla Cutter, House (Middlesex County, Massachusetts)
Union Church/St. Paul's Church (Litchfield County, Connecticut)
Walker McGregor Farmstead (Yankton County, South Dakota)