Maps
- Atlas of Marion County, Iowa, 1901
- Another source of 1901 Plat maps
- Atlas and Plat Book of Marion County, Iowa, 1917
- Plat Book of Marion County, Iowa, 1930
- Atlas and Rural Directory of Marion County, Iowa, 1937
- Marion county GIS maps in pdf format - many current street/highway, city, cemetery, park, election, historic, and other maps (and links to adjacent counties)
IAGenWeb - Marion County
