Oliver County has always been small. So has its county seat. Sanger was the county seat for fourteen years. It’s on the eastern edge of the county, right on the Missouri River. Two brothers named George and Charles Henry Sanger founded the town in 1879. They made their living selling chopped wood to passing steamboats. A post office came to Sanger in 1881. George Sanger was the first postmaster. Oliver County was established in 1885, when it split off from Mercer County. It was named for a