| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| historical iowa railroad maps | 1.47 | 0.1 | 5684 | 13 | 29 |
| historical | 0.61 | 0.1 | 146 | 36 | 10 |
| iowa | 1.37 | 0.7 | 3472 | 2 | 4 |
| railroad | 0.9 | 0.6 | 119 | 53 | 8 |
| maps | 1.22 | 0.2 | 5122 | 75 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| historical iowa railroad maps | 1.35 | 0.1 | 8845 | 54 |
