BlockFrom the record
One of 50 National Register listings published here for Marin County · listed in 2025 · category: District.
Sources: the case file at the National Archives · the National Register database, National Park Service
Station KPH, Marconi Wireless Telegraph Company of America
Listed on the National Register of Historic Places in 2025. 12 historic topographic surveys show this location, the earliest from 1916.
The listing
- What is counted as historic. The nomination lists 4 buildingss as contributing to the listing.
- Address. 18500 CA 1, Marshall, 94940
- When was it listed? January 2025
- Category. district
- Census division. Northwest Marin
- National Register reference number. 88003223 - 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.
Then and now
1916 to 1995The ground this property stands on, surveyed 79 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.
Fires near this property
23 since 1995Regional context, not property-specific evidence. The federal wildfire occurrence database lists 23 fires within 5 miles of Station KPH, Marconi Wireless Telegraph Company of America between 1995 and 2020, burning about 12,360 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 | 7 |
| Power generation/transmission/distribution | 5 |
| Equipment and vehicle use | 5 |
| Recreation and ceremony | 4 |
| 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 |
|---|---|---|---|---|
| 29 September 2006 | Equipment and vehicle use | under an acre | Shasta-Trinity Unit | TUCKER |
| 13 September 2015 | Missing data/not specified/undetermined | under an acre | Marin County Fire Department | not named |
| 11 September 2015 | Power generation/transmission/distribution | under an acre | Point Reyes National Seashore | PIERCE |
| 9 August 2002 | Missing data/not specified/undetermined | under an acre | Point Reyes National Seashore | WHITEGATE |
| 23 August 2013 | Arson/incendiarism | under an acre | Point Reyes National Seashore | CYPRUS |
| 20 August 1996 | Recreation and ceremony | under an acre | Point Reyes National Seashore | HUT |
| 8 July 2005 | Equipment and vehicle use | under an acre | Point Reyes National Seashore | H RANCH |
| 7 July 2016 | Recreation and ceremony | 1.0 acres | Point Reyes National Seashore | PELICAN |
Mines and quarries near this property
9 within 5 milesRegional context, not property-specific evidence. The federal mineral resources record lists 9 workings within 5 miles of Station KPH, Marconi Wireless Telegraph Company of America: 5 occurrences, 2 prospects, 1 past producer, 1 producer. 1 still produces. What was taken out: Stone, Crushed/Broken, Tungsten, Sand and Gravel, Construction, Stone. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.
| Where | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Unnamed Location | Stone | Occurrence | ||
| Bender | Tungsten | Occurrence | ||
| Bender Dell Bender | Tungsten | Occurrence | 1950 | |
| Gravel Pit | Sand and Gravel, Construction | Prospect | ||
| Gravel Pit | Sand and Gravel, Construction | Prospect | ||
| Borello Quarry | Stone, Crushed/Broken | Producer | ||
| Quarry | Stone, Crushed/Broken | Occurrence | ||
| Unknown | Stone, Crushed/Broken | Occurrence | ||
| Unnamed Quarry | Stone, Crushed/Broken | Past Producer |
Maps showing this location
12 surveysUnited States Geological Survey topographic sheets whose coverage includes this point. Matched by taking the coordinate the National Park Service records for this property, then testing that coordinate against the published boundary of every sheet.
- 1916 USGS Point Reyes quadrangle1:48000
- 1916 USGS Point Reyes quadrangle1:62500
- 1918 USGS Point Reyes quadrangle1:62500 - 6 printings
- 1947 USGS Santa Rosa quadrangle1:250000
- 1949 USGS Santa Rosa quadrangle1:250000 - 2 printings
- 1954 USGS Point Reyes quadrangle1:62500 - 5 printings
- 1954 USGS Tomales quadrangle1:24000 - 6 printings
- 1958 USGS Santa Rosa quadrangle1:250000 - 3 printings
- 1962 USGS Santa Rosa quadrangle1:250000
- 1964 USGS Santa Rosa quadrangle1:250000
- 1983 USGS Napa quadrangle1:100000
- 1995 USGS Tomales quadrangle1:24000
Listed places nearby
6 within 8 milesOther 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.
| Photograph | Property | Distance | Listed |
|---|---|---|---|
| Station KPH Operating Station | under 500 feet | 1989 | |
| Brock Schreiber Boathouse and Beach | 3.2 miles | 1978 | |
| Point Reyes Peninsula Dairy Ranches Historic District | 4.4 miles | 2018 | |
| RCA Point Reyes Receiving Station | 5.0 miles | 2018 | |
 | Pierce Ranch | 5.2 miles | 1985 |
 | Tomales Presbyterian Church and Cemetery | 7.2 miles | 1975 |
Sources for this property
| National Archives record | The nomination case file for reference 88003223 in Record Group 79. |
| Marin County | All 50 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.