| Yorba Linda -- History
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| | since 1950
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| Program from the Imperial Highway dedication ceremony, December 2, 1961
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| Program from the Yorba cemetary dedication ceremony, March 5, 1976
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| Letter from Charles Knowlton to March Butz Charles Knowlton wrote this letter to the Yorba Linda Public Library in 1959. In it he details his 1916 survey of Yorba Linda for the county supervisors. |
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