| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| national archives railroad records | 1.03 | 1 | 6914 | 56 | 34 |
| national | 1.75 | 0.7 | 2759 | 79 | 8 |
| archives | 1.49 | 0.5 | 4213 | 100 | 8 |
| railroad | 1.71 | 0.9 | 3265 | 82 | 8 |
| records | 0.79 | 1 | 983 | 94 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| national archives railroad records | 1.52 | 0.9 | 5205 | 70 |
