| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| iowa heritage collection | 0.11 | 1 | 7503 | 57 | 24 |
| iowa | 0.91 | 0.2 | 7030 | 45 | 4 |
| heritage | 0.74 | 0.1 | 9225 | 81 | 8 |
| collection | 1.43 | 0.6 | 2827 | 29 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| iowa heritage railroad depot collection | 1.42 | 0.6 | 6760 | 76 |
| historic iowa railroad map | 0.28 | 0.7 | 5764 | 5 |
| historical iowa railroad maps | 0.47 | 0.3 | 707 | 15 |
| iowa railroad historical society | 1.74 | 1 | 321 | 24 |
| iowa rock island railroad depot | 0.09 | 0.1 | 4770 | 64 |
| railroad museum in iowa | 0.99 | 0.7 | 3201 | 85 |
| iowa heritage digital collections | 0.43 | 0.7 | 4832 | 74 |
| old railroads in iowa | 1.76 | 0.9 | 3272 | 2 |
| history of railroads in iowa | 0.01 | 0.4 | 5386 | 7 |
| iowa interstate railroad ho layout | 1.51 | 0.8 | 5551 | 8 |
| state of iowa railroad maps | 1.92 | 0.2 | 9486 | 27 |
| iowa traction railroad locomotives | 1.86 | 0.5 | 3119 | 20 |
| oregon heritage rail museum | 1.89 | 0.9 | 3241 | 72 |
| railroad maps of iowa | 0.41 | 0.3 | 9000 | 18 |
| iowa interstate railroad des moines | 0.85 | 0.1 | 7098 | 12 |
| iowa railroad map 1880 | 1.74 | 0.5 | 930 | 23 |
| oregon heritage railroad museum | 1.76 | 0.6 | 9001 | 23 |
| railroads in iowa map | 1.41 | 0.7 | 7962 | 15 |
| oregon rail heritage center | 0.5 | 0.1 | 6432 | 40 |
| list of railroads in iowa | 1.42 | 0.9 | 4233 | 100 |
