Iowa - Criteria: B (person)
| Adler, E. P., House |
| Antioch School |
| Ashton, Ned, House |
| Aunty Green Hotel |
| Ausadie Building |
| Badgerow Building |
| Bailey, George A. and Mary Tinkel, House |
| Baird, E. J., House |
| Bank of Sumner |
| Barrows, Edward S., House |
| Beck, Chief Justice Joseph M., House |
| Bedford House |
| Beiderbecke, Leon Bismark, House |
| Belknap, Gen. William Worth, House |
| Bell, Hill McClelland, House |
| Bell, John, Block |
| Best, Louis P. and Clara K., Residence and Auto House |
| Bettendorf, Joseph F., House |
| Bicksler Block |
| Boerner-Fry Company/Davis Hotel |
| Booth, Edmund and Mary Ann Walworth, House |
| Boyd, Byron and Ivan, House |
| Bregant, Jean and Inez, House |
| Brookhart, Smith Wildman and Jennie (Hearne), House |
| Budd, Prof, J.L., Sarah M., and Etta Budd, House |
| Burg Wagon Works Building |
| Burr Oak House/Masters Hotel |
| Byfield, Dr. Albert Henry, House |
| Carey, John T. and Marietta (Greek) House |
| Carpenter, James Sansom, House |
| Carson, Thomas C., House |
| Cassel, Carl and Ulrika Dalander, House |
| Catalpa |
| Caulkins, Dr. Martin H., House and Office |
| Chamberlin, Clarence D., House |
| Chief Wapello's Memorial Park |
| Clark, Alexander, House |
| Clermont Public School |
| Cody Homestead |
| Coffin, Lorenzo S., Burial Plot |
| Conger, Jonathan Clark, House |
| Cummins, Albert Baird, House |
| Curtis, Gen. Samuel R., House |
| Curtis, George M., House |
| Darling, Jay Norwood and Genevieve Pendleton, House |
| Darwin, Mary, House |
| Davis, Timothy, House |
| Dawley House |
| Deering, Nathaniel Cobb and Lucetia Baily, House |
| Denmark Congregational Church |
| Dils-Downer House |
| Dodge, Augustus Caesar, House |
| Dodge, Grenville M., House |
| Dow House |
| Drake Public Library |
| Drake University Campus Historic District |
| Dr. Salsbury's Laboratories, Main Office and Production Laboratory Building |
| Ebeling, Arthur, House |
| Edel, Matthew, Blacksmith Shop and House |
| Edgewood School of Domestic Arts |
| Ellsworth-Jones Building |
| Feller, Robert William Andrew, Farmstead |
| Fellows, James C., House |
| First Congregational Church |
| First Lutheran Church |
| First Universalist Church of Cedar Rapids |
| Florence-Council On The Iowa Site |
| Flynn-Griffin Building |
| Former US Post Office Building |
| Foster Park Historic District |
| Franklin Regular Baptist Church |
| French, Alice, House |
| Gannon, M. V., House |
| Garretson, Owen A. and Emma J., House |
| Garst, Roswell and Elizabeth, Farmstead Historic District |
| Goering, Jacob, House |
| Goode, Lowry W., and Hattie N., First North Des Moines House |
| "Grant Wood's ""Fall Plowing"" Rural Historic Landscape District" |
| Green, John A., Estate |
| Hall, James Norman, House |
| Harlan House Hotel |
| Harlan-Lincoln House |
| Harmon and LeValley Northwest Historic District |
| Harriman, Dr. O. B., House |
| Hart, Charles Walter, House |
| Harvat, Emma J., and Mary E. Stach House |
| Hepburn, Col. William Peters, House |
| Herndon Hall |
| Herring Hotel |
| Hitchcock, Rev. George B., House |
| Hobson Block |
| Holdoegel, Perry C. and Mattie Forrest, House |
| Homestead Building |
| Horn House |
| Horton-Suiter House |
| Hotel Manning |
| Iowa Commission for the Blind Building |
| Iowa Lakeside Laboratory Historic District |
| Irwin, John N. and Mary L. (Rankin), House |
| Jacobson Farm |
Data from United States Park Service and Wikidata
