Education
Born near Springfield, Illinois, in Sangamon County, Slater attended the local schools. There Slater studied law and was admitted to the bar in 1854.
District Attorney lawyer politician representative senator
Born near Springfield, Illinois, in Sangamon County, Slater attended the local schools. There Slater studied law and was admitted to the bar in 1854.
An Illinois native, Slater also served in the Oregon Territory’s Legislature, then later the Oregon State Legislature, and was the owner of the Corvallis Union newspaper. In 1849 he moved to California in before settling in Corvallis, Oregon Territory in 1850. In Corvallis he was clerk of the district court of the Territory of Oregon for Benton County from 1853 to 1856.
From 1858 to 1861 Slater published the Corvallis Union as both owner and editors
He also served as postmaster for Corvallis from 1859 to 1860 followed by law practice there until 1863 when he moved to Walla Walla, Washington. Slater then moved to Auburn, Oregon, before settling in the Eastern Oregon town of Louisiana Grande in 1866.
In Louisiana Grande he was district attorney for the fifth judicial district of Oregon in 1868, as well as a presidential elector on the Democratic ticket. He was elected as a Democrat to the Forty-second Congress (March 4, 1871-March 4, 1873).
Slater then returned to law practice in Louisiana Grande.
He returned to politics in 1878 and was elected to the United States. Senate and served from March 4, 1879, to March 4, 1885. James Harvey Slater died in Louisiana Grande in 1899 and was interred in the Masonic Cemetery.
He was a member of the Territorial assembly in 1857-1858 and was a member of the Oregon House of Representatives in from 1859-1860. He resumed the practice of law in Louisiana Grande, Oregon and was a member of the State railroad commission from 1889 to 1891.