Iowa
- History
- Allamakee County Historical Society
- Amana Heritage Society
- Clive Historical Society
- Cyndi's List of Genealogy Sites on the Internet: Iowa
- Davenport: Past and Present (1858)
- Debates of the Constitutional Convention of the State of Iowa Volume 1
- Debates of the Constitutional Convention of the State of Iowa Volume 2
- Floyd County Museum
- Genealogy & Historical Society of Le Claire Township
- Glimpse of Iowa in 1846
- Google: Iowa - History
- Grandmother Brown's Hundred Years 1827 - 1927
- Historical Society of Pottawattamie County
- Historical Tour of Black Hawk County
- History of Iowa (1903)
- IAGenWeb Project
- Iowa and the Centennial (1876)
- Iowa as it is in 1855
- Iowa as it is in 1856
- Iowa Ballroom Project
- Iowa Barn Foundation
- Iowa Cemeteries
- Iowa Census Records
- Iowa Genealogical Society
- Iowa Historian
- Iowa History Project
- Iowa Migrations
- Learn About Iowa's Past
- Living History Farms
- Making of Iowa (1900)
- Manning Centennial Book
- Marble Rock Historical Society
- Monroe County Historical Society & Museum
- Odebolt History Pages
- Parker Historical Society of Clay County
- Pioneers of Marion County (1872)
- Political Graveyard: Iowa
- Pottawattamie County Genealogical Society
- Preservation Iowa
- Quakers of Iowa (1914)
- Sequicentennial Look at Hamilton County
- Silos & Smokestacks National Heritage Area
- State Historical Society of Iowa
- State Historical Society of Iowa Catalog
- State Library of Iowa
- Tabor Historical Society
- Yahoo!: Iowa - History