Primero, Colorado

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.

• 1891 USGS Spanish Peaks quadrangle1:125000
• 1891 USGS Trinidad quadrangle1:125000
• 1893 USGS Spanish Peaks quadrangle1:125000
• 1893 USGS Trinidad quadrangle1:125000
• 1895 USGS Spanish Peaks quadrangle1:125000
• 1897 USGS Spanish Peaks quadrangle1:125000, 5 printings
• 1900 USGS Spanish Peaks quadrangle1:125000
• 1951 USGS Madrid quadrangle1:24000, 3 printings
• 1954 USGS Trinidad quadrangle1:250000, 2 printings
• 1955 USGS Trinidad quadrangle1:250000
• 1958 USGS Trinidad quadrangle1:250000
• 1959 USGS Trinidad quadrangle1:250000
• 1982 USGS Trinidad quadrangle1:100000
• 1988 USGS Trinidad quadrangle1:250000

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 42 fires within 5 miles of Primero (historical) between 1992 and 2018, burning about 133 acres in total. 16 started naturally. 3 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:

• Segundo
• Medina Plaza
• Sarcillo
• Velasquez Plaza
• Sequndo
• Valdez

Every fire recorded in Las Animas County

Regional context, not property-specific evidence. The federal mineral resources record lists 2 workings within 5 miles of Primero (historical): 2 producers. All of them still produce. What was taken out: Stone, Crushed/Broken. 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 Las Animas 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 194641. 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.