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Old Maps of O'Leary, Iowa for Academic Research

Study the evolution of O'Leary with 11 high-resolution historic maps. Whether you're teaching, researching, or modeling changes in land use, these maps provide essential visual documentation of urban, environmental, and geographic change.

  • Analyze long-term change: Track patterns in development, transportation, and natural features.
  • Ideal for environmental or urban studies: Support academic projects with primary historical map data.
  • Use in the classroom or lab: Educators and researchers rely on these maps to bring historical context to life.

These maps are a powerful tool for teaching, research, and visualizing how O'Leary has changed over the decades.

O'Leary, IA maps

(11)
  1. 1955 Map of Sioux City, 1959 Print
    1955 Map of Sioux City, 1959 Print
    1955 Sioux City
    1959 Print · USGS
    The Missouri River valley in the mid-fifties is captured here during a time of major engineering and social transition. Genealogists and historians can trace the foundations of Gavins Point Dam, tribal boundaries on the Santee Sioux Indian Reservation, and local landmarks like the Norfolk State Hospital.
    4 unique versions available
  4. 1958 Map of Sioux City
    1958 Map of Sioux City
    1958 Sioux City
    1958 Print · USGS
    The Missouri River valley in the late fifties was a bustling intersection of tribal lands, rail corridors, and river towns. Genealogists can trace family roots through specific rural sites like Daisy Valley School, St Johns Church and School, and Yankton State Hospital.
  7. 1959 Map of Sioux City
    1959 Map of Sioux City
    1959 Sioux City
    1959 Print · USGS
    The tri-state region surrounding the Missouri River is captured here in the late fifties, showing the convergence of Nebraska, South Dakota, and Iowa. Researchers can trace rural lineages through numerous country schoolhouses like Cemetery School and the many numbered Washington School districts.
  10. 1962 Map of Union Center, 1964 Print
    1962 Map of Union Center, 1964 Print
    1962 Union Center
    1964 Print · USGS
    The agricultural heartland of Plymouth and Woodbury Counties is documented here in the early sixties, showing a landscape defined by rail lines and section roads. Researchers can locate family landmarks like St Josephs Cem, the small settlement of Neptune, and the path of the Illinois Central Railroad through Merrill.
  13. 1985 Map of Union Center, 1986 Print
    1985 Map of Union Center, 1986 Print
    1985 Union Center
    1986 Print · USGS
    Plymouth County farm country is captured here in the mid-1980s, showing the rural township lines and small community centers. Researchers can locate family landmarks such as Union Cem, St Josephs Ch, and the settlement of Union Center.
  16. 1986 Map of Sioux City North
    1986 Map of Sioux City North
    1986 Sioux City North
    1986 Print · USGS
    The tri-state borderlands of Iowa, South Dakota, and Nebraska are captured here in the mid-eighties as the region's agricultural and academic centers thrived. Researchers can trace historic rail lines like the Illinois Central Gulf and locate landmarks from Briar Cliff College to the heights of Spirit Mound.
    2 unique versions available
  19. 2010 Map of Union Center, 2010 Print
    2010 Map of Union Center, 2010 Print
    2010 Union Center
    2010 Print · USGS
    Covers O'Leary, including Union Center, Plymouth County, and other nearby areas
  22. 2013 Map of Union Center, 2013 Print
    2013 Map of Union Center, 2013 Print
    2013 Union Center
    2013 Print · USGS
    Covers O'Leary, including Union Center, Plymouth County, and other nearby areas
  25. 2015 Map of Union Center, 2015 Print
    2015 Map of Union Center, 2015 Print
    2015 Union Center
    2015 Print · USGS
    Covers O'Leary, including Union Center, Plymouth County, and other nearby areas
  28. 2018 Map of Union Center, 2018 Print
    2018 Map of Union Center, 2018 Print
    2018 Union Center
    2018 Print · USGS
    Covers O'Leary, including Union Center, Plymouth County, and other nearby areas
  31. 2022 Map of Union Center, 2022 Print
    2022 Map of Union Center, 2022 Print
    2022 Union Center
    2022 Print · USGS
    Plymouth County at the start of the 2020s remains a landscape of steady agricultural tradition and remote rural hamlets. Family historians can trace local roots through the Union Cem and Saint Joseph Cem, while exploring the small centers of Union Center and O'Leary.
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  • What are the different types of historical maps available for O'Leary?
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