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In page Elizabeth Crozer Campbell:

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Campbell married William (Bill) Campbell in May 1920.[6] Bill had served in World War I and had been gassed two days before the armistice of November 11, 1918.[1] His lung damage, due to exposure to mustard gas, caused them to move to Los Angeles, California, and later to the drier climes of Twentynine Palms where they established a homestead.[citation needed]