| ★ |  Iowa NHD 2025 Promo Short | Explore Iowa National History Day | | 108 | Estados Unidos | |
| 18 |  The Story Behind Artifact Iowa | Producer Interview | | 439 | Estados Unidos | 84 |
| 12 |  Iowa History 101: The History of the Iowa Farm | | 311 | Estados Unidos | 84 |
| 8 |  Maryland History Day Judge Training - Video 5: Introduction to Evaluating Entries | mdhumanities @mdhumanities | 254 | — | 85 |
| 17 |  Maryland History Day Judge Training - Video 6: Rules and Infractions | mdhumanities @mdhumanities | 220 | — | 84 |
| 13 |  Maryland History Day Judge Training - Video 7: Evaluating Historical Argument and the Theme | mdhumanities @mdhumanities | 212 | — | 84 |
| 16 |  Iowa History 101: The Nature of Iowa: Considering the Environment in State History | | 192 | Estados Unidos | 84 |
| 9 |  Maryland History Day Judge Training - Video 8: Evaluating Wide Research & Primary Sources | mdhumanities @mdhumanities | 187 | — | 84 |
| 5 |  Maryland History Day Judge Training - Video 11: Comments and Commenting | mdhumanities @mdhumanities | 174 | — | 85 |
| 10 |  Maryland History Day Judge Training - Video 9: Evaluating Historical Context & Multiple Perspectives | mdhumanities @mdhumanities | 158 | — | 84 |
| 7 |  Maryland History Day Judge Training - Video 10: Evaluating Historical Context & Significance | mdhumanities @mdhumanities | 144 | — | 85 |
| 3 |  Iowa History 101: Intro to Resources at the State Historical Society of Iowa’s Research Centers | | 140 | Estados Unidos | 85 |
| 14 |  Maryland History Day Judge Training - Video 3: Categories and Divisions | mdhumanities @mdhumanities | 111 | — | 84 |
| 19 |  Iowa History 101: Save Us From The Ordinary - Five Decades of Iowa's Music Counterculture | | 106 | Estados Unidos | 84 |
| 15 |  Maryland History Day Judge Training - Video 4: Annual Theme & Topics | mdhumanities @mdhumanities | 104 | — | 84 |
| 2 |  Let's Go To Iowa | | 91 | Reino Unido | 85 |
| 6 |  Iowa History 101: Secret Iowa: A Guide to the Weird, Wonderful, and Obscure | | 76 | Estados Unidos | 85 |
| 11 |  Iowa History 101: The Inspiring Story of the Iowa Chemist Who Saved the Manhattan Project | | 58 | Estados Unidos | 84 |
| 20 |  Think Like a Historian: Corroboration with Ashley Howard | | 42 | Estados Unidos | 83 |
| 1 |  Iowa History 101: National History Day in Iowa | | 37 | Estados Unidos | 91 |
| 4 |  Maryland History Day for English Learners | mdhumanities @mdhumanities | 12 | — | 85 |