Waltham, 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.

• 1893 USGS La Salle quadrangle1:62500, 2 printings
• 1893 USGS Lasalle quadrangle1:62500, 2 printings
• 1911 USGS La Salle quadrangle1:62500
• 1913 USGS La Salle quadrangle1:62500, 4 printings
• 1947 USGS La Salle quadrangle1:62500, 2 printings
• 1958 USGS Aurora quadrangle1:250000, 3 printings
• 1961 USGS Aurora quadrangle1:250000
• 1966 USGS Troy Grove quadrangle1:24000, 2 printings
• 1985 USGS Kewanee quadrangle1:100000, 2 printings
• 1993 USGS Troy Grove quadrangle1:24000

History of LaSalle County, Illinois : Its Topography, Geology, Botany, Natural History, History of the Mound Builders, Indian Tribes, French Explorations, and a Sketch of the Pioneer Settlers of Each Town to 1840, with an Appendix, Giving the Present Status of the County, Its Population, Resources, Manufactures and Institutions, published 1877 names this settlement in its chapter on Waltham Township. These are the passages that mention it, exactly as the scans read.

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 13 fires within 5 miles of Waltham between 2013 and 2017, burning about 52 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:

• Troy Grove
• Triumph
• Dimmick
• Prairie Center
• Culton (historical)
• Fitchmoor

Every fire recorded in LaSalle County

Regional context, not property-specific evidence. The federal mineral resources record lists 6 workings within 5 miles of Waltham: 3 past producers, 2 producers, 1 plant. 3 still produce. What was taken out: Sand and Gravel, Construction, Stone, Crushed/Broken, Silica. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

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 423284. 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.