Abraham Groesbeck House (Cook County, Illinois)
Academy of the Sacred Heart (Wayne County, Michigan)
Adams County Courthouse (Adams County, Pennsylvania)
Aetna Station No. 5 (Fond du Lac County, Wisconsin)
AF and AM Lodge 687, Orangeville (Stephenson County, Illinois)
Alabama Insane Hospital (Tuscaloosa County, Alabama)
Ammadelle (Lafayette County, Mississippi)
Ammendale Normal Institute (Prince George's County, Maryland)
Anamosa Main Street Historic District (Jones County, Iowa)
Anderson Downtown Historic District (Madison County, Indiana)
Andrew Frame House (Waukesha County, Wisconsin)
Andrew Thomas House (Carroll County, Indiana)
Angelo Marre House (Pulaski County, Arkansas)
Ann Arbor Central Fire Station (Washtenaw County, Michigan)
Annobee Apartments (Pierce County, Washington)
Ansel T. Walling House (Pickaway County, Ohio)
Arcade Hotel (Clark County, Ohio)
Archibald M. Kennedy House (Rush County, Indiana)
Armsmear (Hartford County, Connecticut)
Athenaeum of Philadelphia (Philadelphia County, Pennsylvania)