In 20th century, much of area turns into Sea Ranch resort development.

Logging and shipping become major activities in the 19th century as mill products are sent south by schooners.

California Natives of Pomo-speaking groups occupy Kalé near the Healdsburg Plaza at the confluence of the Russian River (Ashokawna) and Dry Creek (Mihilakawna), and many outlying villages along both waterways.

Bartolome Ferrelo assumes command of two-ship Portuguese expedition after the death of Juan Rodriguez de Cabrillo, sails north near Cape Mendocino, then follows California coast south to Navidad, Mexico.

Francis Mc Caughey Martin and Sarah Latimer Finley, mother of editor Ernest Finley, lead the suffragefight.

South county becomes major Yiddish cultural center.

Maria Ignacia Lopez Carrillo builds first permanent residence in Santa Rosa valley, settles near son-in-law Vallejo on Rancho Cabeza de Santa Rosa, the only woman to be directly given a Mexican land grant.

Ernest Rufus receives land grant from Mexican government, acquires 17,580 acres called Gualala Ranchon German Rancho.

Clarence Lea of Santa Rosa, former District Attorney, elected to U. House of Representatives, servesmore than 30 years with bipartisan support.

He builds strong conservation record, supports aviation-related bills.