John Long Mountains define the high terrain of this portion of Granite County, where the borders of Lolo National Forest and Deerlodge National Forest converge. The landscape is characterized by a dense network of drainages and named gulches, including Golden Gulch and Mason Gulch in the north, and Chico Gulch in the south. These features suggest a history of prospecting and drainage-based navigation through the timbered slopes. High points such as Sliderock Mtn, Spink Point, and the prominent Sandstone Ridge provide significant landmarks across the quadrangle. Human activity is evidenced by the passage of Co Rd 354 and Brewster Creek Rd, which follow the natural contours of the land, while Mountain Spring serves as a vital water source in the heart of the forest.
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This is the sole edition of this map. No revisions or reprints were ever made.
1903 · Bonner
USGS Topo · 1:125,000
1908 · Philipsburg
USGS Topo · 1:125,000
1909 · Sapphire
USGS Topo · 1:125,000
1919 · Drummond
USGS Topo · 1:125,000
1921 · Drummond
USGS Topo · 1:125,000
1947 · Butte
USGS Topo · 1:250,000
1958 · Butte
USGS Topo · 1:250,000
1959 · Bearmouth
USGS Topo · 1:62,500
1959 · Ravenna
USGS Topo · 1:62,500
1960 · Butte
USGS Topo · 1:250,000