El Dorado County, California

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Every property in this county listed on the National Register of Historic Places, with the year it was listed and the federal nomination document.

Photograph	Property	Type	Listed	Reference
	Baldwin Estate	building	1987	87000496
	Bayley Hotel	building	1978	78000660
	Coloma	district	1966	66000207
	Coloma Community Hall	building	2025	100012016
	Combellack-Blair House	building	1985	85000259
	Confidence Hall	building	1982	82002174
	Eddy Tree Breeding Station	district	1987	87000485
	Episcopal Church of Our Saviour	building	1977	77000291
	Fountain-Tallman Soda Works	building	1984	84000770
	Georgetown Civil War Armory	building	2017	100001601
	Hattie (Gold Bug), Priest and Silver Pine Mines and Stampmill	district	1985	85003522
	Heller Estate	building	1987	87000497
	Lombardo Ranch	building	1977	77000292
	John Pearson Soda Works	building	1985	85003326
	Pope Estate	building	1987	87000495
	Sugar Pine Point State Park	district	1973	73000401
	Tahoe Meadows	district	1990	90000555
	United States Post Office-Main Street Branch	building	2025	100011215
	Vikingsholm	district	1996	96001078
	Wakamatsu Tea and Silk Colony Farm	site	2009	09000397
	Jacob Zentgraf House	building	2025	100010882

Drawn when these were printed as single large sheets: the town seen from the air, and the county divided into its farms with every owner named. Each opens the original at the Library of Congress.

Selected from the Digital Public Library of America's 33 image records catalogued for this county. Every one shown here carries a public-domain status or a licence that permits reuse on a site that carries advertising; non-commercial, share-alike and restricted images are excluded. The selection is spread across the county's towns (at most eight per town), so no single institution's bulk upload crowds out the rest. Each opens the holding library's record, and the complete set at the Digital Public Library of America is one click away.

Flown by the U.S. Geological Survey between 1937 and 1989, the Aerial Photo Single Frames collection is the definitive mid-century view of the land: fields, roads and rivers as the camera saw them. The Survey holds 4,306 frames inside the rectangle that bounds this county; the 48 frames below were taken over the county itself, chosen across the decades of flights (at most four a year from that rectangle), so one flight cannot crowd out the rest. The full set is free to browse and download at EarthExplorer under the dataset Aerial Photo Single Frames.

The thermometers that kept this county's weather, and the gages that measured the flow of its streams, as the federal records hold them. The extremes below are measured values from those records, not estimates.

Who lived here in 1950, one enumeration district at a time, as the Census Bureau described each district. Each row opens its official National Archives result, with Population Schedules and ED Maps available there.

Every wildfire the federal occurrence database records inside this county: 7,736 of them, burning about 174,778 acres. 785 started naturally and 443 were recorded as arson. Each settlement page carries the fires within five miles of it.

The five largest, by the area the report gives. None of them was recorded as arson.

Every settlement page carries the fires within five miles of it - see the settlement index below.

The NOAA Storm Events Database holds 238 reports for this county, causing 8 deaths, no injuries and about $29,136,000 in recorded property damage. Each settlement page carries the reports that name it.

The most serious of them, by death, then injury, then recorded damage. The accounts are quoted exactly as the forecast office filed them.

The Survey's mineral resources record lists 2,750 workings inside this county. 45 still produce and 2,705 are closed or unrecorded. Each settlement page carries the workings within five miles of it.

The least common of them first, because a county's hundredth gravel pit says nothing its first ten did not.