1900s (20th Century) Maps of Decker, Montana
Explore 5 historic maps of Decker from the 1900s (20th Century). These maps offer a rare glimpse into what life looked like during the 1900s — showing old roads, neighborhoods, homes, and landmarks that have changed or disappeared over time.
Whether you're researching your family's past, planning a metal detecting trip, or studying how Decker's landscape evolved across the 1900s, these high-resolution maps are a powerful tool for exploring the history of this region.
- Focus on a specific era: All maps on this page are from the 1900s, giving you a focused view of this time period.
- See what’s changed: Compare century-old streets, trails, and buildings to today's modern landscape using overlays and satellite layers.
- Research with precision: Use these maps for genealogy, historical research, land use analysis, or educational projects.
- View, download, or print: Maps are fully viewable online in high resolution, and can be downloaded or printed for your own records.
Start exploring Decker's history through authentic maps from the 1900s. This is your window into the past.
Decker, MT maps
(5)- 1954 Map of Hardin, 1964 Print
1954 Hardin1964 Print · USGSSoutheastern Montana is documented here during the mid-fifties, showing the vast tribal lands and historic battle sites before modern highway expansion. Researchers can trace the Chicago Burlington and Quincy rail line through Hardin or locate the Custer National Cemetery and Museum.2 unique versions available - 1957 Map of Hardin
1957 Hardin1957 Print · USGSSoutheastern Montana in the mid-fifties reveals a landscape shaped by tribal lands and the historic Bighorn river valleys. Researchers can trace the Chicago Burlington and Quincy RR through Hardin and locate the National Cemetery and Custer Battlefield Monument. - 1958 Map of Hardin
1958 Hardin1958 Print · USGSSoutheastern Montana in the mid-fifties presents a landscape defined by significant tribal lands and national monuments. Researchers can trace the geography of the Little Bighorn at Custer Battlefield National Monument and locate settlements like Lame Deer and Birney. - 1967 Map of Decker, 1971 Print
1967 Decker1971 Print · USGSBig Horn County ranching and mining land is documented here in the late sixties, just as industrial activity was shaping the Tongue River valley. Researchers can trace rural infrastructure from the Squirrel Creek Sch to the Tongue River Mine and the shoreline of the Tongue River Reservoir.2 unique versions available - 1980 Map of Birney
1980 Birney1980 Print · USGSSoutheastern Montana enters a period of intensive energy development in the early 1980s as coal mines expand across the Big Horn County line. Researchers can trace the industrial footprints of the Spring Creek Mine and West Decker Mine or locate rural landmarks like the Birney Day School.
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