Seehorn, Illinois

Matched by testing this settlement's coordinate against the published boundary of every sheet in the United States Geological Survey's historical collection. Each opens the scanned sheet at the Survey.

• 1925 USGS Quincy quadrangle1:62500, 2 printings
• 1944 USGS Quincy quadrangle1:62500, 5 printings
• 1945 USGS Quincy quadrangle1:62500, 2 printings
• 1948 USGS Quincy quadrangle1:250000, 2 printings
• 1956 USGS Quincy quadrangle1:250000, 3 printings
• 1971 USGS Marblehead quadrangle1:24000, 2 printings
• 1986 USGS Quincy quadrangle1:100000, 2 printings
• 1996 USGS Marblehead quadrangle1:24000

With The Colors in Pike County, Illinois, published 1920 has no passage naming this settlement, which was common for smaller places. Its township is covered in full.

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 18 fires within 5 miles of Seehorn between 2008 and 2018, burning about 242 acres in total. None started naturally. None was recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

Settlements close enough to share some of these fires:

• Hull
• Kinderhook
• Shinn
• Spencer
• Aladdin
• East Hannibal

Every fire recorded in Pike County

Regional context, not property-specific evidence. The federal mineral resources record lists 1 working within 5 miles of Seehorn: 1 past producer. None of them still produces. What was taken out: Sand and Gravel, Construction. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Every working recorded in Pike County

The eight closest, with where each one stands in the county. Distances are straight-line, computed from the Geographic Names Information System coordinates.

This settlement is recorded in the Geographic Names Information System as feature 423171. The sheet list is computed by point-in-boundary test against the United States Geological Survey's historical topographic inventory. Both are works of the United States government and carry no copyright under 17 U.S.C. 105.

Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.

Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.