
The Spindle Oil Field and numerous mines define the industrial character of this Weld County landscape during the mid-20th century. This area, often referred to as the Tri-Towns, shows the distinct early footprints of Frederick, Dacono, and Firestone. The map captures a moment of transition where established coal mining operations, evidenced by labels for Puritan and several mine dumps, exist alongside the growing oil and gas infrastructure.
35 named features on this map. Tap any name to fly to it.
Don’t see what you’re looking for? This feature index may not catch every label — zoom into the map to look around manually.
7 editions found
1890 · East Denver
USGS Topo · 1:125,000
1899 · West Denver
USGS Topo · 1:125,000
1902 · Greeley
USGS Topo · 1:125,000
1904 · Niwot
USGS Topo · 1:62,500
1940 · Brighton
USGS Topo · 1:31,680
1940 · Eastlake
USGS Topo · 1:31,680
1940 · Lafayette
USGS Topo · 1:31,680
1944 · Lafayette
USGS Topo · 1:31,680
1944 · Brighton
USGS Topo · 1:31,680
1944 · Eastlake
USGS Topo · 1:31,680