Local newspapers furnish a wealth of genealogical data and often help fill in the gaps in official records. The names contained in this index are primarily residents of Sonoma County, but some residents of the surrounding counties-Marin, Napa, Solano, Lake and Mendocino-can also be found within these pages. Newspapers indexed include: Cloverdale Review, Guerneville Times and Russian River Advertiser, Healdsburg Tribune, Petaluma Argus, Petaluma Daily Courier, Press Democrat, Sonoma Index Tribune, Santa Rosa Republican, and the Sebastopol Times. This volume is unique in that letters from soldiers, many serving in other than the U.S. army (British, Canadian, French and Italian), are included. This eleventh volume in the series contains more than 14,500 entries in alphabetical table format. Entries include: surname, given name, type of entry (birth, death, marriage, probate, or other records which include letters written by World War I soldiers), name of newspaper, date of article, page and column number, and comments. Surname entries often include alternative spellings. Given Name entries may include the relationship to the individual listed. Comments furnish, as available, cemetery names, locations mentioned in an article, special circumstances, and other supplemental data. A list of Sonoma County cemeteries, a map of the county, and a list of Sonoma place names enhance this valuable resource.