Oregon Republican League:
Republican League Register of Oregon, The Register Publishing Company, 1896, page 271.
SWACKHAMER, SAMUEL O., of Union, was born in Warren County, New Jersey, July 25, 1837, and came to Oregon in 1863, and has lived constantly in Union County, engaged as a stock raiser and freighter/ In 1876 he was the first Republican elected Sheriff, and was re-elected in 1878. In 1880 he was nominated for the State Senate. He was appointed Register of the United States Land Office at La Grande in 1885. He was a delegate to the county convention from 1864 to 1892, and the state conventions of 1886 and 1890.
-Tony Larson