found: Work cat.: Pilcher, S.H. Sutwik Island quadrangle, Alaska resource data file [MF], 2000:map, p. 1 (shows Sutwik Island in the Pacific Ocean, southeast of the Alaska Peninsula)
found: GNIS, June 19, 2002(Sutwik Island; Lake and Peninsula County, Alaska; island; SE of Alaska Penin., 14 mi. S of Cape Kunmik, Aleutian Ra.; 56⁰33ʹ26ʺN, 157⁰10ʹ9ʺW; variant names: Sutkhwik Island, Sutkwik Island)
found: Rand McNally:Alaska map (Sufwik I.)
found: GNISisland; 56°33ʹ26ʺN 157°10ʹ09ʺW
notfound: Columbia gaz.