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Dossier 3690Historic SiteMedium 68

Mount Calvert Historical and Archaeological Park

Upper Marlboro, Maryland1 min readFile amended Directions

Mount Calvert Historical and Archaeological Park is a historic site in Upper Marlboro, Maryland, an NPS Network to Freedom. The colonial town—where the enslaved worked the Patuxent. The archive files it under Underground Railroad history, the Underground Railroad and African American history. The dossier holds 3 documented facts — the record is history-forward, no paranormal claims on file. The site is open to visitors.

Archive note: 3 sources on file
Status
Operating
Designation
NPS Network to Freedom
Coordinates
38.816, -76.754 · Approximate (city centroid)

Is Mount Calvert Historical and Archaeological Park haunted?

No claims are filed here — the record keeps this place for its documented history, not for a haunting on file.

The record — long form

Mount Calvert is the first seat — Charles Town's 1696 designation, the courthouse and jail on the Patuxent. The tobacco was the second life — the Brown and Burch plantations, the hundreds enslaved who worked the 'sotweed.' The marines were the war — the 500 who landed in '14, the Bladensburg route to burn Washington.

The archaeology is the span — the Archaic camps to the Woodland villages, the thirteen thousand years of use. The house is the remnant — the 1789 Federal for John Brown, the plantation's big house that's the museum. Mount Calvert is the layered point — the county seat that became the plantation, the river landing that saw the British.

The file keeps Mount Calvert: the 1696 seat, the tobacco plantation, the 1814 landing, and the archaeology.

Mount Calvert is the archive's Prince George's file — the town that became the farm.

Why this file matters

Mount Calvert is the archive's Prince George's file — the 13,000-year site.

A point keeps its uses — the file's suggestion being that Mount Calvert's hold is the succession: the county seat, the slave plantation, the British landing, and the park that digs it all.

Documented history

  • NPS includes this site in the National Underground Railroad Network to Freedom. A documented site gives the file real substance; this entry is part of that record. It's verified history: the dossier's load-bearing detail. Sources including 'Public NPS Network to Freedom listings, row 2, ID 01GA01' carry the record. The detail belongs to the verified spine of the entry.

    Verified historyNational Park Service
  • Mount Calvert Historical and Archaeological Park is documented on the National Park Service Network to Freedom for its role in the Underground Railroad. Mount Calvert Historical and Archaeological Park's past is on record — the entry belongs to the verified layer the museum itself interprets. The fact is historically verified — the part of the file that doesn't need hedging. Sources including 'NPS Network to Freedom listing' carry the record. It is the kind of fact the rest of the dossier leans on.

    Verified historyNational Park Service
  • The site is documented. The site's documented history is the record the rest of the file stands on. It's verified history: the dossier's load-bearing detail. 'NPS Network to Freedom listing' documents the entry. It is the kind of fact the rest of the dossier leans on. The file stays open on it. The claim holds its place in the ledger.

    Verified historyNational Park Service

Sources on file

Field notes & open questions

UGRR enrichment wave 1; VERIFY task auto-queued.

"Mount Calvert Historical and Archaeological Park." HauntHunt dossier 3690, https://haunthunt.com/place/mount-calvert-historical-and-archaeological-park-upper-marlboro-maryland/ (file amended October 2, 2026).

Within ~50 miles

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