Derby, 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.

• 1916 USGS Equality quadrangle1:62500, 4 printings
• 1949 USGS Paducah quadrangle1:250000, 2 printings
• 1950 USGS Paducah quadrangle1:250000
• 1954 USGS Paducah quadrangle1:250000, 2 printings
• 1959 USGS Equality quadrangle1:62500, 2 printings
• 1959 USGS Rudement quadrangle1:24000, 3 printings
• 1961 USGS Paducah quadrangle1:250000, 2 printings
• 1964 USGS Paducah quadrangle1:250000, 2 printings
• 1984 USGS West Frankfort quadrangle1:100000
• 1987 USGS Paducah quadrangle1:250000
• 1987 USGS West Frankfort quadrangle1:100000
• 1996 USGS Rudement quadrangle1:24000

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 56 fires within 5 miles of Derby between 1994 and 2020, burning about 1,229 acres in total. None started naturally. 15 were 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:

• Eagle
• Horseshoe
• Somerset
• Rudement
• Whitesville (historical)
• Saline Valley Store (historical)

Every fire recorded in Saline County

Regional context, not property-specific evidence. The federal mineral resources record lists 37 workings within 5 miles of Derby: 14 past producers, 13 occurrences, 7 prospects, 3 producers. 3 still produce. What was taken out: Fluorine-Fluorite, Barium-Barite, Stone, Crushed/Broken, Zinc, Fluorine-Fluorite, Lead. 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 Saline County

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

Matched on this settlement's Geographic Names Information System number rather than its name, so it cannot be a different place of the same name in another state.

This settlement is recorded in the Geographic Names Information System as feature 422620. 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.