Birkhoff, George D., House
Why it's listed
This three-story frame house at 22 Craigie Street in Cambridge, Massachusetts, was reportedly built in the 1890s, although the style and neighboring houses suggest an earlier date. Its architect is unknown, and its French Revival design is described as popular for the period. The exterior remains intact. Inside, a central hall plan has been modified by turning a first-floor parlor into a cathedral-ceiling living area and by adding a modern kitchen and a bath. The house is listed for its association with George D. Birkhoff, who lived there from 1920 to 1928 while teaching at Harvard. Colleagues described Birkhoff as the leading native American mathematician of his generation. He solved a theorem that Henri Poincare had posed but never answered, and he developed his own ergodic theorem, which addressed a long-standing problem in gas theory and statistical mechanics. His work is presented as evidence that American science had come of age internationally by the early twentieth century.
Significance in brief: The house is significant as the home of mathematician George D. Birkhoff, who lived there from 1920 to 1928. The nomination describes him as the leading native American mathematician of his generation. His solution of Poincare's "last theorem" and his ergodic theorem are cited as achievements that showed American science had come of age on the world scene.
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 75000295, listed May 15, 1975. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | 22 Craigie, Cambridge |
|---|---|
| County | Middlesex County |
| Listed | May 15, 1975 |
| Reference number | 75000295 |
| Resource type | Building |
| Period of significance | 1900- |
| Architectural style | French Revival |
| Areas of significance | Science |
| Level of significance | National |
| National Historic Landmark | Yes, designated May 15, 1975 |
| Status (as stated in the nomination) | Listed in excellent condition and occupied as a private residence. The exterior is intact, and the interior has a converted first-floor parlor, a modern kitchen and an added bath. |
| Acreage | 0.9 |
| Coordinates | 42.37819, -71.12861 (NPS GIS) |
What listing means for this property
National Register listing is honorary for a privately owned home: it does not by itself restrict what an owner may do with their own money, and it does not require public access. Restrictions come from local landmark or historic-district ordinances, which are separate (how they differ).
Owner-occupied houses are not eligible for the 20% federal rehabilitation tax credit, which applies to income-producing buildings, but many states offer credits for homeowners. Listing also opens the door to preservation easements and to buying a plaque. Start with what listing means for homeowners, renovating a listed house and selling one.
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 75000295.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q5538300
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.