1900s (20th Century) Maps of Bonanza, Colorado
Explore 7 historic maps of Bonanza 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 Bonanza'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 Bonanza's history through authentic maps from the 1900s. This is your window into the past.
Bonanza, CO maps
(7)- 1956 Map of Montrose, 1963 Print
1956 Montrose1963 Print · USGSThe Colorado western slope in the late fifties and early sixties shows a landscape defined by the Denver & Rio Grande Western RR and the Gunnison River. Trace the development of Blue Mesa Reservoir or locate high-country sites like the Bachelor Mine.3 unique versions available - 1959 Map of Montrose
1959 Montrose1959 Print · USGSWestern Colorado in the late fifties is defined by the high peaks and river valleys of the Southern Rockies. Genealogists and historians can trace the paths of the Denver & Rio Grande Western RR or locate mountain settlements like Crawford, Lazear, and Doyleville. - 1959 Map of Bonanza, 1961 Print
1959 Bonanza1961 Print · USGSSaguache County's rugged mining corridors are captured here in the late fifties as the regional silver and lead industries matured. Genealogists and historians can trace the foundations of Bonanza, the former townsite at Sedgwick, and numerous working claims like the Rawley Mine.5 unique versions available - 1960 Map of Montrose
1960 Montrose1960 Print · USGSThe Colorado high country in the mid-fifties is captured here during a period of steady ranching and persistent mining. Researchers can trace the path of the Denver & Rio Grande Western RR or locate small settlements like Somerset, Maher, and Sargent.2 unique versions available - 1968 Map of Montrose
1968 Montrose1968 Print · USGSThe Western Slope and Continental Divide meet in the late sixties, showing the vital river valleys and high-mountain mining districts. Trace the historic route of the Denver and Rio Grande Western RR or locate small settlements like Sargents and Powderhorn. - 1980 Map of Bonanza, 1981 Print
1980 Bonanza1981 Print · USGSBonanza was a thriving mining hub in the late twentieth century, centered at the meeting point of three National Forests. Genealogists and historians can trace the industrial footprint of the Rawley Mines, find old cemeteries, and locate the Little Bonanza Mill among the high peaks.3 unique versions available - 1982 Map of Saguache, 1983 Print
1982 Saguache1983 Print · USGSThe San Luis Valley meets the high peaks of the Sawatch Range in the early 1980s, revealing a landscape shaped by mining and rail. Researchers can trace the Denver and Rio Grande Western railroad and locate high-altitude sites like the Rawley Mine and the settlement of Bonanza.
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