Mount Bullion, California

The same ground, surveyed 96 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1889 1985

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.

• 1889 USGS Markleeville quadrangle1:125000
• 1891 USGS Markleeville quadrangle1:125000
• 1893 USGS Markleeville quadrangle1:125000, 9 printings
• 1948 USGS Walker Lake quadrangle1:250000, 2 printings
• 1956 USGS Topaz Lake quadrangle1:62500, 4 printings
• 1957 USGS Walker Lake quadrangle1:250000, 4 printings
• 1962 USGS Walker Lake quadrangle1:250000
• 1964 USGS Walker Lake quadrangle1:250000, 2 printings
• 1979 USGS Heenan Lake quadrangle1:24000, 3 printings
• 1985 USGS Smith Valley quadrangle1:100000, 2 printings

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 172 fires within 5 miles of Mount Bullion (historical) between 1992 and 2020, burning about 17,997 acres in total. 148 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:

• Loope
• Marklee Village
• Markleeville
• Shay Creek Summer Home Area
• Silver Mountain (historical)
• Centerville (historical)

Every fire recorded in Alpine County

Regional context, not property-specific evidence. Museums hold 1,689 specimens collected within 10 miles of Mount Bullion (historical) between 1863 and 1975: 1,512 Animalia, 99 Plantae, 73 Fungi, 3 Unrecorded, 2 Protozoa. 12 distinct Species records are shown. Collected by A. C. Browne, A. Eastwood & J. T. Howell, A. J. Gilbert and others. Each is a physical object with a catalogue number, and each entry opens the museum's record. This is what was collected and kept, not a survey of what lives here - nothing can be concluded from a species being absent.

Image	Species	Year	Collected by	Where, as recorded
	Arabis platysperma A.Gray	1863	William H. Brewer	Ebbetts Pass
	Eriogonum lobbii var. minus Torr. & A.Gray	1863	William H. Brewer	Near summit of Silver Mountain
	Hieracium breweri A.Gray	1863	William H. Brewer	Summit of Silver Mountain
	Linosyris howardii var. nevadensis A.Gray	1863	William H. Brewer	Ebbetts Pass
	Pedicularis attollens A.Gray	1863	William H. Brewer	Camp 129, Silver Creek Valley
	Pellaea breweri D.C.Eaton	1863	William H. Brewer	Ebbetts Pass
	Phacelia hydrophylloides Torr. ex A.Gray	1863	William H. Brewer	Near camp at Ebbett's Pass
	Primula suffrutescens A.Gray	1863	William H. Brewer	Silver Mountain
	Raillardia argentea A.Gray	1863	William H. Brewer	Ebbetts Pass
	Rosa gymnocarpa var. pubescens S.Watson	1863	William H. Brewer	Silver Mountain Pass
	Silene watsonii B.L.Rob. & Seaton	1863	William H. Brewer	near Ebbetts Pass
	Homalothecium aureum (Spruce) H.Rob.	1870	T. P. James	Monitor.

All 1,689 specimens within 10 miles, at the Global Biodiversity Information Facility.

Regional context, not property-specific evidence. The federal mineral resources record lists 105 workings within 5 miles of Mount Bullion (historical): 56 past producers, 34 occurrences, 8 unknowns, 4 producers. 5 still produce. What was taken out: Gold, Silver, Copper, Gold, Silver. 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 Alpine 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 1667831. 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.

Specimens. Global Biodiversity Information Facility (GBIF), https://www.gbif.org/. Only records licensed CC0 or CC BY are used. Records licensed CC BY-NC are excluded because this site carries advertising. Images are checked individually and any whose licence is non-commercial, no-derivatives or unreadable is refused.

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.