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Capt. Fernando Quiroz, a Spanish explorer, sails up from San Francisco Bay to see if the Petaluma Creek will lead to Bodega Bay.
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John Martin leases the Two Rock-Chileno Valley-Petaluma area from the Mexican governor. He is the first non-aboriginal settler (the first person who was not there originally).
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Garrett W. Keller commissions the first official survey of Petaluma, establishing lots and streets and the first American Hotel is constructed on Main Street.
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Petaluma’s first bridge is built across the Petaluma River
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Petaluma’s first newspaper, the Petaluma Journal and Sonoma County Advertiser, is established by Henry Weston and Thomas L. Thompson.
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The Petaluma Brewery, the first of its kind in Sonoma County, is established.
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The first fire company in Petaluma is established.
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The first policeman, John Brown, is appointed at a salary of $60 a month.
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An act to include the town of Petaluma in California is approved.
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Wilson Elementary was established as a public school.
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Isaac Wickersham, an early settlers, establishes the county’s first bank.
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Charles Minturn opens the Petaluma Haystack Railroad, a 21.2 mile track, only the third railroad in the state.
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George Purdy builds the three-story Cosmopolitan Hotel on Main Street.
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Cypress Hill Cemetery is established by John A. McNear.
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St. Vincent’s Academy is established.
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Petaluma's first public library opens.
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A disastrous fire destroys several downtown buildings.
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Peter Donahue opens regular service on his San Francisco and Santa Rosa railroad line.
This allows for products to be moved by both train and boat. -
Another disastrous downtown fire causes $75,000 in damage.
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The Citizens Gas Company receives rights to lay and open gas mains in Petaluma.
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The first egg incubator is invented by Petalumians Lyman Byce and Isaac Dias.
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A drawbridge at D Street over the Petaluma River is constructed and Main Street is paved with blocks.
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Some of Petaluma's most beautiful buildings are constructed.
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One hundred walnut trees are planted at the D Street Plaza (now known as Walnut Park).
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Petaluma City Hall is completed at a cost of $16,000 by Samuel and Joseph Newsom.
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The Petaluma Woman’s Club is organized.
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The Petaluma Street Railroad runs for the last time.
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Lyman Byce patents (says it belongs to him) the first egg incubator.
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Construction begins on the Petaluma Free Public Library at Fourth and B streets.
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The Petaluma Chamber of Commerce is formed.
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Fred J. Wiseman makes the first airmail flight, delivering a letter from Petaluma to Santa Rosa.
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Elsa Little opens Petaluma General Hospital at Sixth and I streets. The 33-bed hospital operates until 1974.
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The Petaluma Creamery is organized with 35 stockholders and 1,900 cows.
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Contract for construction of the new high school on Fair Street is signed.
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Petaluma called “The Egg Basket of the World”, and the first Egg Day celebration is held.
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The Petaluma Jewish Center (now Congregation B’nai Israel) opens on Western Avenue.
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Passenger service is closed down on the Petaluma-Santa Rosa Railway.
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A steel bridge is constructed at D Street, replacing an earlier bridge that was built in 1883.
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The fire station on D Street is completed.
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The Petaluma Leghorns, a semi-pro football team, is formed.
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McKinley Elementary School is built on Ellis Street.
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Sky Ranch Airport (Petaluma Municipal Airport) opens.
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The Petaluma, the last steamboat on the Petaluma Creek or any California river, makes its final trip.
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A new four-lane freeway is completed, bypassing downtown Petaluma.
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A fire begins in the balcony of the California Theater (now the Phoenix).
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A new hospital, Hillcrest, opens on Hayes Lane.
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Main Street and Third Street are renamed Petaluma Boulevard North and Petaluma Boulevard South.
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The Golden Eagle Milling Co. at Second and C streets is destroyed by fire.
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Fire destroys the Continental Hotel at Western Avenue and Kentucky Street.
Washington Mutual Bank is now located at the site. -
The Healey Mansion, once known as one of Petaluma’s most beautiful homes, is demolished and replaced with a gas station.
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Petaluma Plaza shopping center on North McDowell Boulevard opens.
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One hundred years of passenger service on the Northwestern Pacific Railroad comes to an end.
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Casa Grande High School, a new public high school, opens.
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Movie director George Lucas comes to Petaluma to shoot scenes for American Graffiti.
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The Washington Square Shopping Center opens for business.
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Skip Sommer begins a major renovation of the Great Petaluma Mill, a complex of stone, brick and wood buildings.
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The Petaluma Creamery is damaged by a fire.
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The new library at East Washington and Payran streets is dedicated
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The Friedman Brothers Hardware building on East Washington Street is destroyed by a fire.
The Downtown River Apartments are now located on the site. -
Lucchesi Park, a 31-acre park, opens.
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Petaluma Valley Hospital opens on North McDowell Boulevard, replacing Hillcrest Hospital.
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The 177-acre Helen Putnam Regional Park is opened.
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More housing appears as chicken ranches and hay farms disappear.
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Sonoma County’s first factory outlet mall opens in Petaluma.
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The Petaluma campus of Santa Rosa Junior College opens.
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Petaluma’s downtown is formally listed on the National Register of Historic Places.
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The Petaluma Creamery closes after 91 years of operation.
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Theatre Square opens.
The six-block Theatre District includes a 12-screen movie theater, restaurants, offices and living units.