Warshauer Mansion

Listed on the National Register of Historic Places in 1974.

From the record

One of 13 National Register listings published here for Conejos County · listed in 1974 · category: Building.

Sources: the case file at the National Archives · the National Register database, National Park Service

The listing

What is counted as historic. The nomination lists 1 building as contributing to the listing.
Address. 515 River St., Antonito, 81120
When was it listed? August 1974
Category. building
Census division. Antonito
National Register reference number. 74000564 - the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.

Fires near this property

17 since 1994

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 17 fires within 5 miles of Warshauer Mansion between 1994 and 2000, burning about 4 acres in total. 1 started naturally. 1 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.

Reported cause	Fires
Missing data/not specified/undetermined	9
Recreation and ceremony	4
Railroad operations and maintenance	2
Natural	1
Arson/incendiarism	1

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

Date	Cause	Size	Reported by	Name on the report
5 July 1997	Railroad operations and maintenance	under an acre	Royal Gorge Field Office	RAILROAD 2
5 July 1997	Railroad operations and maintenance	under an acre	Rio Grande National Forest	RAILROAD #1
14 July 1994	Missing data/not specified/undetermined	under an acre	Conejos County Office	not named
3 June 2000	Natural	1.5 acres	Jicarilla Agency	MONTEZUMA
23 April 1994	Missing data/not specified/undetermined	under an acre	Conejos County Office	not named
4 March 1994	Missing data/not specified/undetermined	under an acre	Conejos County Office	not named
23 March 1994	Missing data/not specified/undetermined	under an acre	Conejos County Office	not named
29 December 1994	Missing data/not specified/undetermined	under an acre	Conejos County Office	not named

Every fire recorded in Conejos County

Mines and quarries near this property

10 within 5 miles

Regional context, not property-specific evidence. The federal mineral resources record lists 10 workings within 5 miles of Warshauer Mansion: 7 producers, 1 occurrence, 1 prospect, 1 past producer. 7 still produce. What was taken out: Sand and Gravel, Construction, Perlite, Pumice. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Site	Commodity	Status	Recorded
Prospect	Pumice	Prospect
Unknown	Pumice	Producer	Pumice
Antonito Mill	Perlite	Producer
Johns-Manville	Perlite	Producer
Silbrico	Perlite	Producer
Gravel Pit	Sand and Gravel, Construction	Past Producer
Unk	Sand and Gravel, Construction	Producer
Unk	Sand and Gravel, Construction	Producer
Unk	Sand and Gravel, Construction	Producer
Unknown	Sand and Gravel, Construction	Occurrence	Sand and Gravel

Every working recorded in Conejos County

Storms near this property

3 since 1997

Regional context, not property-specific evidence. The National Weather Service names Antonito, the town this property stands in, in 3 storm reports between 1997 and 2014: 3 hail. No death or injury is recorded in these reports. Each account below is quoted exactly as the forecast office filed it, from the NOAA Storm Events Database, and each date opens the federal record of that event.

When	Event	Place named	Harm	What the report says
July 2014	Hail	Antonito	-	no account filed
July 2007	Hail	Antonito	-	no account filed
August 1997	Hail	Antonito	-	no account filed

Every storm recorded in Conejos County

Map coverage status

No historic map-sheet match is published for this property yet. That does not mean no map exists. This record needs a coordinate-quality review before it can be joined to a sheet boundary. Browse the county's mapped places while that work is pending.

Listed places nearby

6 within 8 miles

Other National Register properties close enough to walk or drive between, ordered by distance from this one. Both positions come from the same geocoding pass that matched these properties to their map sheets.

Property	Distance	Listed
S.P.M.D.T.U. Concilio Superior	under 500 feet	2001
Palace Hotel	under 500 feet	1994
Denver & Rio Grande Railroad San Juan Extension (Boundary Increase)	0.2 miles	2007
Engine No. 463	0.5 miles	1975
Our Lady of Guadalupe Church	0.9 miles	2018
Garcia-Espinosa-Garland Ranch Headquarters	3.3 miles	2018

Sources for this property

National Archives record	The nomination case file for reference 74000564 in Record Group 79.
Conejos County	All 13 listed properties in this county.

Provenance

Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
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.
Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.