2,706 Matches for Olaf Birkeland
| Newspaper Location | Matches |
|---|---|
| Minnesota | 1,027 |
| Wisconsin | 778 |
| Iowa | 235 |
| North Dakota | 164 |
| Montana | 132 |
| South Dakota | 102 |
| Canada | 53 |
| Washington | 47 |
| Illinois | 25 |
| New York | 23 |
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