Papers of a provisional governor of the Oregon Territory, churchman, and merchant. Includes letterpress copybook, 1847-1850; additional correspondence, including correspondence with Neil M. Howison, captain of the schooner Shark, wrecked on the bar of the Columbia River; papers of the Brig Henry Association, ca. 1850; papers of George's son William Abernethy; legal, military, and business papers; receipts, biographical data, clippings and ephemera.