Carson Mansion — designed by Samuel Newsom and Joseph Cather Newsom (Newsom and Newsom) [FACT-0182]; designated: Historic American Buildings Survey (HABS CA-1911), May 1964, Contributing property, Old Town Eureka Historic District, National Register of Historic Places (listed 1991) [FACT-0185].
Location: Old Town, Eureka, California, United States
Verified facts
- Located in Old Town, Eureka, California
confidence 90/100 · 4 independent sources · SRC-0179, SRC-0180, SRC-0181, SRC-0437 - Designed by Samuel Newsom and Joseph Cather Newsom (Newsom and Newsom)
confidence 85/100 · 3 independent sources · SRC-0182, SRC-0180, SRC-0181 - Historic designation: Historic American Buildings Survey (HABS CA-1911), May 1964; Contributing property, Old Town Eureka Historic District, National Register of Historic Places (listed 1991)
confidence 75/100 · 3 independent sources · SRC-0179, SRC-0184, SRC-0180
Evidence & sources
- SRC-0179 — Carson Mansion – Wikipedia (Tier 3, encyclopedia; retrieved June 2026)
- SRC-0180 — Eureka Heritage Society – Architectural Legacy (Legacy8) (Tier 2, scholarship; retrieved June 2026)
- SRC-0181 — Historic Structures – Carson House, Eureka California (Tier 2, scholarship; retrieved June 2026)
- SRC-0182 — Ingomar Club – Mansion History (official operator) (Tier 1, owner_statement; retrieved June 2026)
- SRC-0184 — Library of Congress – Carson House HABS CA-1911 (Tier 1, official_archive; retrieved June 2026)
- SRC-0437 — Library of Congress — Carol M. Highsmith Archive, catalog record for the Carson Mansion (item 2013634798) (Tier 1, official_archive; retrieved June 2026)
How we verify
Every fact above is independently corroborated by at least two reputable sources and
confidence-scored before publication. Claims that cannot clear that bar are withheld. We publish
location only at neighborhood/city granularity — exact street addresses and personal information
are structurally barred from publication. Last reviewed June 2026.