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1972 Map of Calypso

Name: 1972 Topographic Map of Calypso
Creator: U.S. Geological Survey
Published: 1975
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1975

About this map

The Yellowstone River carves a massive bend through this Prairie County landscape, creating a focal point for the region's transportation and water infrastructure in the early 1970s. This stretch of riverbank is defined by the parallel paths of two major rail lines, the Chicago Milwaukee St Paul and Pacific and the Burlington Northern, which navigate the level ground near the water. The small settlement of Calypso and the isolated Swank Well represent the sparse human footprint in an area dominated by intricate drainage systems like Coonie Coulee and North Fork Lost Boy Creek.

High ground is marked by Sheridan Butte and the Terry Scenic View, offering vantage points over the complex network of intermittent streams. The map traces local routes such as the Calypso Trail and numerous jeep trails that connect remote water sources, including Calypso Spring and several flowing wells. This survey captures a moment when the river-and-rail corridor remained the primary artery for movement through the broken terrain of eastern Montana.