| ★ | Think Like a Historian: Contextualization with Jon Lauck | | 36 | Estados Unidos | |
| 10 | Iowa History 101: An Overview of Iowa Counties | | 399 | Estados Unidos | 84 |
| 8 | Iowa History 101: The History of the Iowa Farm | | 311 | Estados Unidos | 84 |
| 13 | Iowa History 101: Tom Harkin, Jesse Jackson, and Iowa's Left Wing Politics of the 1980s | | 197 | Estados Unidos | 83 |
| 16 | Iowa History 101: The Nature of Iowa: Considering the Environment in State History | | 192 | Estados Unidos | 83 |
| 17 | Iowa History 101: Intro to Resources at the State Historical Society of Iowa’s Research Centers | | 140 | Estados Unidos | 83 |
| 18 | Think Like a Historian: Continuity and Change Over Time with Kevin Mason | | 68 | Estados Unidos | 83 |
| 7 | Iowa History 101: The Progressive Influence of Iowa's Churches in the Late Twentieth Century | | 61 | Estados Unidos | 84 |
| 19 | Iowa History 101: Iowa Brewing: A Complicated History | | 55 | Estados Unidos | 82 |
| 2 | Think Like a Historian: Corroboration with Ashley Howard | | 42 | Estados Unidos | 85 |
| 3 | Think Like a Historian: Historical Inquiry with Rachelle Chase | | 41 | Estados Unidos | 85 |
| 12 | Iowa History 101: National History Day in Iowa | | 37 | Estados Unidos | 83 |
| 1 | Think Like a Historian: The Role of Archaeologists with John Doershuk | | 36 | Estados Unidos | 86 |
| 6 | Think Like a Historian: Sourcing with Jeff Bremer | | 34 | Estados Unidos | 84 |
| 15 | Think Like a Historian: Cause and Effect with Megan Birk | | 28 | Estados Unidos | 83 |
| 20 | Think Like a Historian: Corroboration with Cory Haala | | 25 | Estados Unidos | 82 |
| 4 | Think Like a Historian: Contextualization with Emiliano Aguilar | | 24 | Estados Unidos | 85 |
| 9 | Think Like a Historian: Contextualization with Michael Vogt | | 21 | Estados Unidos | 84 |
| 11 | Think Like a Historian: Comparison and Ethnography with Kristy Nabhan-Warren | | 18 | Estados Unidos | 84 |
| 14 | Think Like a Historian: The Role of Archivists with Kelsey Berryhill | | 17 | Estados Unidos | 83 |
| 5 | Think Like a Historian: Continuity and Change Over Time with Bettina Dolinsek | | 10 | Estados Unidos | 85 |