Listed on the National Register of Historic Places in 1985. 7 historic topographic surveys show this location, the earliest from 1943.
From the record
“Summer Cottage, or "Mount Ada", is a historic residence located at 76 Wrigley Road in Avalon, on Santa Catalina Island, California. It was the former summer mansion and gardens of William Wrigley Jr.”
Wikipedia article William Wrigley Jr. Summer Cottage, CC BY-SA 4.0.
One of 616 National Register listings published here for Los Angeles County · listed in 1985 · category: Building.
National Register reference number.85001785- 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
5 since 1999
Regional context, not property-specific
evidence. The
federal wildfire occurrence database
lists 5 fires within 5 miles of William Wrigley Jr. Summer Cottage
between 1999 and 2007, burning about 5,102 acres in total. None started naturally. None 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
5
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
27 July 2006
Missing data/not specified/undetermined
1.0 acres
California Department of Forestry & Fire Protection
not named
27 July 2006
Missing data/not specified/undetermined
1.0 acres
California Department of Forestry & Fire Protection
not named
21 July 1999
Missing data/not specified/undetermined
350 acres
California Southern Region Operations
GOAT CA LAC 99119650
10 May 2007
Missing data/not specified/undetermined
4,750 acres
Los Angeles County Fire Department
ISLAND
25 December 2006
Missing data/not specified/undetermined
under an acre
California Department of Forestry & Fire Protection
Regional context, not property-specific
evidence. The federal mineral resources record lists
8 workings within 5 miles of William Wrigley Jr. Summer Cottage: 8 past producers.
None of them still produces. What was taken out: Lead, Zinc, Silver, Sand and Gravel, Construction, Silver, Zinc. Distance is straight-line from the
map coordinates, so a quarry counted here may appear on a neighbouring
settlement's page as well.
United 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.
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.
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.
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