| ★ |  Iowa History 101: National History Day in Iowa | | 37 | Estados Unidos | |
| 4 |  Iowa History 101: An Overview of Iowa Counties | | 399 | Estados Unidos | 90 |
| 2 |  Iowa History 101: The History of the Iowa Farm | | 311 | Estados Unidos | 92 |
| 12 |  Iowa History 101: Iowa City's Charles Wood Irish and the Dakota Territory Railroad Survey of 1879-81 | | 204 | Estados Unidos | 88 |
| 16 |  Iowa History 101: Tom Harkin, Jesse Jackson, and Iowa's Left Wing Politics of the 1980s | | 197 | Estados Unidos | 87 |
| 11 |  Iowa History 101: The Nature of Iowa: Considering the Environment in State History | | 192 | Estados Unidos | 88 |
| 14 |  Iowa History 101: Bullets, Booze, and a Noose: A Sioux County Prohibition Story | | 159 | Estados Unidos | 87 |
| 6 |  Iowa History 101: The Hollander Fires and the Black Hand: A Clash of Cultures | | 157 | Estados Unidos | 89 |
| 1 |  Iowa History 101: Intro to Resources at the State Historical Society of Iowa’s Research Centers | | 140 | Estados Unidos | 92 |
| 8 |  Iowa History 101: Last Days in Vietnam, First Days in Iowa | | 115 | Estados Unidos | 89 |
| 3 |  Iowa NHD 2025 Promo Short | Explore Iowa National History Day | | 108 | Estados Unidos | 91 |
| 13 |  Iowa History 101: Save Us From The Ordinary - Five Decades of Iowa's Music Counterculture | | 106 | Estados Unidos | 88 |
| 20 |  Let's Go To Iowa | | 91 | Reino Unido | 86 |
| 10 |  Iowa History 101: A Common Life: A Voice from the Progressive Era | | 84 | Estados Unidos | 88 |
| 18 |  Iowa History 101: Amelia Bloomer: Journalist, Suffragist, and Anti-Fashion Icon | | 84 | Estados Unidos | 87 |
| 15 |  Iowa History 101: Ada Hayden: Botanist, Educator, and Preservationist | | 82 | Estados Unidos | 87 |
| 7 |  Iowa History 101: Secret Iowa: A Guide to the Weird, Wonderful, and Obscure | | 76 | Estados Unidos | 89 |
| 5 |  Iowa History 101: The Progressive Influence of Iowa's Churches in the Late Twentieth Century | | 61 | Estados Unidos | 90 |
| 19 |  Iowa History 101: The Inspiring Story of the Iowa Chemist Who Saved the Manhattan Project | | 58 | Estados Unidos | 86 |
| 9 |  Iowa History 101: Iowa's First Japanese Garden | | 49 | Estados Unidos | 88 |
| 17 |  Iowa History 101: Gwendolyn Wilson Fowler: A Woman of Distinction | | 40 | Estados Unidos | 87 |