U.S. Courthouse and Post Office (Pittsburgh, Pennsylvania)

E471908

courthouse government building historic federal building post office building

The U.S. Courthouse and Post Office in Pittsburgh, Pennsylvania, is a historic 19th-century federal building designed in the ornate Second Empire style by Supervising Architect Alfred B. Mullett.

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All labels observed (3)

Label	Occurrences
U.S. Courthouse and Post Office (Pittsburgh, Pennsylvania) canonical	1
U.S. Post Office and Courthouse (Pittsburgh, Pennsylvania)	1
U.S. Post Office and Courthouse, Pittsburgh	1

How this entity was disambiguated

This entity first appeared as the object of triple T4819142 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: U.S. Courthouse and Post Office (Pittsburgh, Pennsylvania)
Context triple: [Alfred B. Mullett, notableWork, U.S. Courthouse and Post Office (Pittsburgh, Pennsylvania)]

A. Allegheny County Courthouse, Pittsburgh
The Allegheny County Courthouse in Pittsburgh is a landmark 19th-century civic building designed by Henry Hobson Richardson and celebrated as one of the finest examples of Richardsonian Romanesque architecture.
B. United States Courthouse, Philadelphia
The United States Courthouse in Philadelphia is a prominent federal judicial building known for its modern architectural design by Romaldo Giurgola.
C. Thomas F. Eagleton United States Courthouse
The Thomas F. Eagleton United States Courthouse is a major federal courthouse in St. Louis, Missouri, notable for housing the United States Court of Appeals for the Eighth Circuit and being one of the largest U.S. federal court buildings.
D. Erie federal courthouse
The Erie federal courthouse is a federal judicial building in Erie, Pennsylvania, that houses proceedings of the U.S. District Court for the Western District of Pennsylvania.
E. Potter Stewart United States Courthouse
The Potter Stewart United States Courthouse is a federal courthouse in Cincinnati, Ohio, named after Supreme Court Justice Potter Stewart and serving as a primary venue for the U.S. Court of Appeals for the Sixth Circuit.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: U.S. Courthouse and Post Office (Pittsburgh, Pennsylvania)
Target entity description: The U.S. Courthouse and Post Office in Pittsburgh, Pennsylvania, is a historic 19th-century federal building designed in the ornate Second Empire style by Supervising Architect Alfred B. Mullett.

A. Allegheny County Courthouse, Pittsburgh
The Allegheny County Courthouse in Pittsburgh is a landmark 19th-century civic building designed by Henry Hobson Richardson and celebrated as one of the finest examples of Richardsonian Romanesque architecture.
B. United States Courthouse, Philadelphia
The United States Courthouse in Philadelphia is a prominent federal judicial building known for its modern architectural design by Romaldo Giurgola.
C. Thomas F. Eagleton United States Courthouse
The Thomas F. Eagleton United States Courthouse is a major federal courthouse in St. Louis, Missouri, notable for housing the United States Court of Appeals for the Eighth Circuit and being one of the largest U.S. federal court buildings.
D. Erie federal courthouse
The Erie federal courthouse is a federal judicial building in Erie, Pennsylvania, that houses proceedings of the U.S. District Court for the Western District of Pennsylvania.
E. Potter Stewart United States Courthouse
The Potter Stewart United States Courthouse is a federal courthouse in Cincinnati, Ohio, named after Supreme Court Justice Potter Stewart and serving as a primary venue for the U.S. Court of Appeals for the Sixth Circuit.
F. None of above. chosen

Statements (31)

Predicate	Object
instanceOf	courthouse ⓘ government building ⓘ historic federal building ⓘ post office building ⓘ
architect	Alfred B. Mullett ⓘ
architecturalFeature	mansard roof ⓘ ornate detailing ⓘ symmetrical façade ⓘ
architecturalStyle	Second Empire ⓘ
category	Courthouses in Pennsylvania ⓘ Government buildings in Pittsburgh ⓘ Post office buildings in Pennsylvania ⓘ Second Empire architecture in Pennsylvania ⓘ
continent	North America ⓘ
country	United States of America ⓘ
designedIn	19th century ⓘ
function	administration of federal justice ⓘ processing of U.S. mail ⓘ
hasArchitecturalStyleCharacteristic	ornate Second Empire style ⓘ
heritageDesignation	listed on the National Register of Historic Places ⓘ
heritageStatus	historic 19th-century building ⓘ
locatedInTheAdministrativeTerritorialEntity	Allegheny County, Pennsylvania ⓘ linked to: Allegheny County Pennsylvania ⓘ
location	Pittsburgh, Pennsylvania ⓘ
maintainedBy	General Services Administration ⓘ linked to: U.S. General Services Administration
namedAfter	United States government functions of courts and postal service ⓘ
owner	United States federal government ⓘ linked to: United States government
partOf	federal court system of the United States ⓘ
supervisingArchitect	Alfred B. Mullett ⓘ
use	United States Post Office ⓘ federal courthouse ⓘ

How these facts were elicited

Referenced by (3)

Full triples — surface form annotated when it differs from this entity's canonical label.

Alfred B. Mullett → notableWork → U.S. Courthouse and Post Office (Pittsburgh, Pennsylvania) ⓘ

Willoughby J. Edbrooke → notableWork → U.S. Post Office and Courthouse (Pittsburgh, Pennsylvania) ⓘ

linked to: U.S. Courthouse and Post Office (Pittsburgh, Pennsylvania)

Tilton & Githens → notableWork → U.S. Post Office and Courthouse, Pittsburgh ⓘ