Download PDF Willow Swamp (MT) USGS topo maps. These are full-sheet 7.5 Minute (1:24,000 scale) topographic maps. There is more than one publication date for the Willow Swamp topo map.
Willow Swamp topo maps are provided as PDF files.
Note: The most current map is the 2020 Willow Swamp topographic map.