Flagg Township Public Library
Why it's listed
Built in 1912 at the northeast corner of Seventh Street and Fourth Avenue in Rochelle, this one-story library sits on a raised basement and is faced in brownish-red mottled brick with raked joints. A limestone string course runs below the windows, and panels of greenish-white Sullivanesque ornament fill the space beneath the wide eaves, which are topped by a green tile roof. Inside, the reading room has an oak librarian's desk, oak stacks, a brick fireplace and a nearly continuous band of leaded glass windows. Andrew Carnegie gave ten thousand dollars toward construction, on condition that the town provide a thousand dollars a year for upkeep and that he approve the plans. His specifications left only the exterior design and materials to the architects, Claude and Starck, who are said to have once worked as draftsmen for Louis Sullivan. The building is valued for blending Sullivan-related details with Prairie School features within tight limits. Alterations have been minor, and it remains a library owned by Flagg Township.
Significance in brief: The nomination argues the library is an excellent early modern design created despite a small budget and Carnegie's restrictions. Its proportions, ornament, polygonal bays and basement window openings relate it to Louis Sullivan, while its broad eaves, wood detailing, low hipped roof and interior layout tie it to the Prairie School.
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 73000713, listed October 25, 1973. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | NE corner 7th St. at 4th Ave., Rochelle |
|---|---|
| County | Ogle County |
| Listed | October 25, 1973 |
| Reference number | 73000713 |
| Resource type | Building |
| Period of significance | 1912 |
| Architect / builder | Claude and Starck |
| Architectural style | Early modern, related to Louis Sullivan and the Prairie School |
| Areas of significance | Architecture |
| Level of significance | State |
| Status (as stated in the nomination) | Listed in excellent condition, occupied and in use as a library, with few and minor alterations. |
| Acreage | 1 |
| Coordinates | 41.92335, -89.06816 (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 73000713.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q5456934
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.