AJ describes how OC taught school in the district school in Manchester, Ontario county, N.Y..
Andrew Jenson, “Cowdery, Oliver,” in LDS Biographical Encyclopedia 4 vols. (Salt Lake City, UT: Andrew Jenson History Company, 1901), 1:246
Oliver was employed as clerk in a store until the winter of 1828-29, when he taught the district school in the town of Manchester, Ontario county, N. Y., nine miles from his father's house.