New Castle Armory
Why it's listed
Built in 1938 on a spacious lot in Shenango Township, just outside New Castle, the armory is an Art Deco complex of ashlar stone designed by the Thayer Company of New Castle. It was constructed as a federal public works project for Troop K, 103rd Cavalry of the Pennsylvania National Guard. The building follows an I plan: a one-story riding hall with a bowstring roof, joined to a front administrative section and a two-story rear former stable. The riding hall measures 66 by 145 feet and is supported by riveted steel Warren bowstring trusses. Its layout reflects the cavalry use, with stables at the rear and grazing needs and odors leading to an outskirts location common to such armories. It is one of nine Pennsylvania armories of this type built between 1912 and 1938. The main building retains very good integrity, including its original windows, and the stable was renovated to provide administrative rooms.
Significance in brief: The armory is significant under criteria A and C as one of nine armories built in Pennsylvania between 1912 and 1938 that follow the I-plan type. It was built as a federal public works project for Troop K, 103rd Cavalry of the Pennsylvania National Guard. Its design by the Thayer Company of New Castle and its very good integrity, including original windows, support its significance.
Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · National Archives catalog entry. NRHP reference 91000516, listed May 9, 1991. Summary generated October 2026 (model claude-haiku-5-5, prompt v1.1-2026-10-29, confidence high).
Key facts
| Address | 820 Frank Ave., Shenango Township, New Castle |
|---|---|
| County | Lawrence County |
| Listed | May 9, 1991 |
| Reference number | 91000516 |
| Resource type | Building |
| Period of significance | 1938-1939 |
| Architect / builder | Thayer Company (architect) |
| Architectural style | Art Deco |
| Criteria |
|
| Areas of significance | Military, Architecture |
| Level of significance | State |
| Acreage | 6 |
| Coordinates | 40.97930, -80.32488 (NPS GIS) |
What listing means for this property
For a publicly owned building or structure, listing mainly matters when federal funds, permits or licences are involved: projects then go through Section 106 review so effects on the property are considered. Listing also strengthens applications for preservation grants and, for leased income-producing uses, can enable the federal rehabilitation tax credit.
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 91000516.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q7006403
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.