Internet Archive has several digitized books related to Washington County History and cities in Washington County, Rhode Island.

County Histories generally give information on the settlement of an area, geography, government, and industry in an area, and sometimes include biographical sketches of citizens or other information about the local residents. Some even include genealogies.

Washington County Histories and histories of cities and peoples in Washington County, Rhode Island include:

Washington County

• History of Washington and Kent Counties, Rhode Island, published 1889

Charlestown

• Historical Sketch of the Town of Charlestown in Rhode Island from 1636 to 1876, published in 1877

East Greenwich

• History of the Town of East Greenwich and Adjacent Territory, from 1677 to 1877, published 1877

Quidnessett

• History of Quidnessett & Allen, Gould, Hill Genealogy, 1908

Westerly

• Westerly, Rhode Island and Its Witnesses for Two Hundred and Fifty Years, 1626-1876, published 1878