Longfellow House–Washington’s Headquarters National Historic Site

Details about Longfellow House–Washington’s Headquarters National Historic Site

Longfellow House–Washington's Headquarters National Historic Site is in Cambridge.

Sources: SRC-1454 · SRC-1455 · SRC-1456

The recorded construction date for Longfellow House–Washington's Headquarters National Historic Site is 1759.

Sources: SRC-1457 · SRC-1455 · SRC-1456

The recorded style of Longfellow House–Washington's Headquarters National Historic Site is Georgian.

Sources: SRC-1457 · SRC-1456 · SRC-3366

Longfellow House–Washington's Headquarters National Historic Site is a Georgian house in Cambridge, Massachusetts. Built in 1759, and is a National Historic Landmark. It is owned by National Park Service.

Location: 105 Brattle Street, Cambridge, Massachusetts, United States

Verified facts

• Located in Cambridge
  confidence 75/100 · 3 recorded source groups · SRC-1454, SRC-1455, SRC-1456, SRC-3761
• Built in 1759
  confidence 75/100 · 3 recorded source groups · SRC-1457, SRC-1455, SRC-1456, SRC-3761
• Architectural style: Georgian
  confidence 75/100 · 3 recorded source groups · SRC-1457, SRC-1456, SRC-3366
• Historic designation: National Historic Landmark; National Historic Site; National Register of Historic Places
  confidence 75/100 · 3 recorded source groups · SRC-1455, SRC-1456, SRC-3367
• Owned by National Park Service
  confidence 95/100 · 6 recorded source groups · SRC-1456, SRC-1455, SRC-3367, SRC-6198, SRC-6199, SRC-10168

Evidence & sources

• SRC-10099 — Cambridge Office for Tourism — Longfellow House–Washington's Headquarters NHS (Tier 2, reference; retrieved June 2026)
• SRC-10168 — Longfellow House-Washington's Headquarters, historic site for 50 years — Cambridge Day (Tier 2, reference; retrieved June 2026)
• SRC-1454 — National Park Service — Longfellow House Washington's Headquarters National Historic Site (park home page) (Tier 1, official_archive; retrieved June 2026)
• SRC-1455 — National Park Service — Longfellow House – Washington's Headquarters (Places listing) (Tier 1, official_archive; retrieved June 2026)
• SRC-1456 — Wikipedia — Longfellow House–Washington's Headquarters National Historic Site (Tier 3, encyclopedia; retrieved June 2026)
• SRC-1457 — National Park Service — Longfellow House Washington's Headquarters NHS, Architecture (Tier 1, official_archive; retrieved June 2026)
• SRC-3366 — History Cambridge — Vassall-Craigie-Longfellow House (Tier 2, historical_society; retrieved June 2026)
• SRC-3367 — The Cultural Landscape Foundation — Longfellow House-Washington's Headquarters National Historic Site (Tier 2, heritage_organization; retrieved June 2026)
• SRC-3761 — britannica.com (Tier 2, journalism; retrieved June 2026)
• SRC-5451 — Directions — Longfellow House Washington's Headquarters NHS (National Park Service) (Tier 1, official_government; retrieved June 2026)
• SRC-5452 — Longfellow House–Washington's Headquarters National Historic Site — Wikipedia (Tier 2, encyclopedia; retrieved June 2026)
• SRC-6198 — NPPlan — Longfellow House-Washington's Headquarters NHS House History (Tier 3, national-parks-reference; retrieved June 2026)
• SRC-6199 — CultureNow — Longfellow House – Washington's Headquarters National Historic Site (Tier 3, cultural-heritage-nonprofit; retrieved June 2026)

How we verify

The entries above show the sources and confidence scores recorded in our fact ledger.
Source tiers are internal classifications, not guarantees of accuracy or independence.
Several sources may repeat the same underlying account; a source count alone does not establish independent corroboration. We show the
street address only for non-residential public landmarks (museums, commercial and civic buildings,
publicly documented filming-location sites); the exact addresses of private residences and any
personal information are structurally barred from publication. Last reviewed June 2026.