The following newspapers are available at the Sonoma County History and Genealogy Library on microfilm. For other newspaper holdings, please contact the individual branch libraries (Cloverdale, Guerneville, Healdsburg, Rohnert Park-Cotati, and Petaluma).
| City | Newspaper Title | Issues Available | Notes |
| Bodega Bay | Signal | 1985-1992 | |
| Navigator | 1987-2006 | ||
| Cloverdale | L'Etoile des pauvres et des souffrants | 1881-83 | Newspaper miscellany: Sonoma, Stanislaus, Sutter, Tehama, Trinity Counties |
| El Verano | Sonoma Valley Republican | 1890 | Newspaper miscellany: Sonoma, Stanislaus, Sutter, Tehama, Trinity Counties |
| Guerneville | Guerneville Times | 1890-1915 (broken) | |
| Guerneville X-Rays | Sept. 24, 1898; Feb. 11, 1899 | ||
| Russian River Advertiser | 1901-1909 | (broken) | |
| Guerneville Times and Russian River Advertiser | May 3-Sept. 13, 1913; Feb. 6, 1915-Jan. 1, 1916; May 16, 1919-Nov. 7, 1919 | ||
| Guerneville Times | June 8, 1947 | ||
| Russian River Reporter | June 3, 1947-July 20, 1947 | ||
| The Paper | June 8, 1979-Dec. 27, 1989 | ||
| Healdsburg | Enterprise | 1876-1938 | |
| The Advertiser | June 2, 1865 | Newspaper miscellany: Sonoma, Stanislaus, Sutter, Tehama, Trinity Counties | |
| Russian River Flag | Jan. 1, 1888-Mar. 5, 1883; Aug. 25, 1886 | ||
| Petaluma | Argus Courier | June 1950-Aug 2002 | |
| Weekly Journal | 1855-1861 | ||
| Morning Argus | Sept. 1874 | Newspaper miscellany: Sonoma, Stanislaus, Sutter, Tehama, Trinity Counties | |
| Daily Imprint | 1885-1891; 1892-1894 | 1885-1891 on: Newspaper miscellany: Sonoma, Stanislaus, Sutter, Tehama, Trinity Counties | |
| Daily Argus | 1906 | ||
| The Standard | 1877-1878 | Newspaper miscellany: Sonoma, Stanislaus, Sutter, Tehama, Trinity Counties | |
| Petaluma Land Journal | 188-? | Newspaper miscellany: Sonoma, Stanislaus, Sutter, Tehama, Trinity Counties | |
| San Francisco | The Bulletin | 1928 | |
| Santa Rosa | Sonoma Democrat | Vol. 2, no. 1 (Oct 22, 1858) | |
| Sonoma County Democrat | Vol. 2, no. 2 (Oct. 28, 1857)-v. 9, no. 23 (Mar. 17, 1866) | ||
| Sonoma Democrat (1866) | Vol. 9, no. 25 (Apr. 1, 1866)-v. 41, no. 14, (Oct. 2, 1897) | ||
| Santa Rosa Daily Democrat | Aug. 1875 - Oct. 1897 (broken) | ||
| Press Democrat | 1897-1969 | ||
| Republican | 1880-1947 (broken) | ||
| Daily Republican | 1881-1899 | ||
| Santa Rosa Times/Evening Times | 1875-1879 | ||
| Evening Press | 1948-1949 | ||
| Sonoma County Land Journal | 1863 | Newspaper miscellany: Sonoma, Stanislaus, Sutter, Tehama, Trinity Counties | |
| Rose and Hill's Sonoma County Real Estate Messenger | 188-? | Newspaper miscellany: Sonoma, Stanislaus, Sutter, Tehama, Trinity Counties | |
| New Grocery Weekly | 1889 | Newspaper miscellany: Sonoma, Stanislaus, Sutter, Tehama, Trinity Counties | |
| The Weekly News | 1879 | Newspaper miscellany: Sonoma, Stanislaus, Sutter, Tehama, Trinity Counties | |
| Santa Rosa Press | 188-? | Newspaper miscellany: Sonoma, Stanislaus, Sutter, Tehama, Trinity Counties | |
| Sonoma County Herald | Jan. 7, 1944-Dec. 1954 | ||
| The Herald | Jan. 4, 1953-Dec. 30. 1965 | ||
| Santa Rosa News Herald | Jan. 5, 1966-Feb. 17, 1988 | ||
| Sonoma County Labor Journal | July 27, 1922-Dec. 27, 1935 | ||
| Sebastopol | Sebastopol Times | 1895-1995 | Many issues missing, 1895-1939; |
| Western Sonoma County Review | 1944-1949 | Partial holdings | |
| West County News | 1984-1986 | ||
Sonoma | Index Tribune | 1879-1904 (broken), 1905-2017 | |
| Sonoma West Times | 1995-2017 | ||
Windsor | The Wahl Street Journal | Oct. 1977-Nov. 1981 | |
| Windsor Journal | Nov. 1981-April 1982 | ||
| The Times | Feb. 1989-Dec. 1992 | ||
| The Windsor Times | Jan. 1993-Dec. 2017 | ||
| Windsor Community News | Oct. 1996-Feb.1997 |
