| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| colorado newspaper archives 1859 1978 | 1.85 | 0.7 | 3906 | 66 |
| colorado newspaper archives free search | 0.91 | 0.7 | 8893 | 61 |
| colorado historic newspaper archive | 1.26 | 1 | 9443 | 93 |
| denver colorado newspaper archives | 0.16 | 0.4 | 2505 | 14 |
| colorado historical newspapers collection | 0.55 | 0.2 | 6770 | 31 |
| colorado historical newspapers online | 0.63 | 1 | 4607 | 70 |
| colorado historic newspapers online | 0.65 | 0.6 | 270 | 9 |
| colorado historic newspapers collection | 1.11 | 0.6 | 6022 | 97 |
| denver co newspaper archives | 0.78 | 0.1 | 9297 | 48 |
| colorado newspaper historic collection | 1.04 | 0.6 | 7449 | 16 |
| pueblo colorado newspaper archives | 0.47 | 0.1 | 1778 | 22 |
| colorado springs gazette newspaper archives | 0.36 | 0.8 | 5402 | 1 |
| state of colorado archives | 0.17 | 0.8 | 8291 | 58 |
| old colorado newspapers online | 0.64 | 0.7 | 683 | 1 |
| colorado historical society archives | 1.51 | 0.5 | 8482 | 90 |
| colorado state archives denver | 1.42 | 0.7 | 259 | 100 |
| today in colorado history | 0.06 | 0.2 | 3035 | 1 |
| colorado history home page | 1.9 | 0.2 | 6743 | 3 |
| brief history of colorado | 1.79 | 0.1 | 9772 | 29 |
| history colorado press release | 0.61 | 1 | 1599 | 54 |
| colorado marriages 1858 - 1939 | 0.58 | 0.9 | 6361 | 91 |
