extends NE-SW Separated from Prince of Wales I. by El Capitan I., W of Clarence Strait, Alex. Arch.
Named in 1879 by W. H. Dall, US@C&GS probably for Tadeusz (Thaddeus) Andrzej Bonawentura Kosciusko, 1746-1817, a Polish citizen who joined the American Revolutionary Army in 1776 as a volunteer and was appointed an engineer with the rank of colonel, later to become a major general.
Calder Bay, Cyrus Cove, Davidson Inlet, Devilfish Bay, Edna Bay, Sea Otter Sound, Shakan Bay, Shipley Bay, Survey Cove, Tokeen Bay, Tokeen Cove, Van Sant Cove,
Capes:Limestone Point, Ruins Point, Surf Point, Turn Point, White Point,
Channels:Brockman Pass, Cosmos Pass, Dry Pass, Fake Pass, Marble Passage, Straw Pass, Tenass Pass, White Cliff Passage,
Cliffs:Hills:Islands:Barrier Island, Barrier Islands, Bluff Island, Cap Island, Clump Island, Divide Island, Dot Island, Dove Island, Eagle Island, Entrance Island, Finger Islands, Flat Island, Fontaine Island, Fox Rock, Gas Rock, Green Island, Hamilton Island, Hoot Island, Keski Island, Knob Island, Kosciusko Island, Marble Island, Middle Island, Orr Island, Owl Island, Round Island, San Island, Scott Island, Scow Island, Shakan Island, Singa Island, Spanberg Island, Station Island, Teal Island, Twin Islands, Whale Head Island, Whale Rock, White Cliff Island,
Lakes:El Capitan Lake, Red Lake, Shipley Lake, Sutter Lake,
Mountains:Mount Calder, Mount Francis, Holbrook Mountain, The Nipples, Perue Peak, Pyramid Peak, Red Bay Mountain, Tokeen Peak,
Mountain Passes:Streams:Charley Creek, Marble Creek, Shakan Creek, Survey Creek, Sutter Creek, Trout Creek,
Cities: