Nelson Island geologic, topographic, and location maps, as well as references that are classified as maps or that contain maps.

Map showing distribution, composition, and age of Late Cenozoic volcanic centers in Alaska, 1986
Luedke, R. G., and Smith, R. L., 1986, Map showing distribution, composition, and age of Late Cenozoic volcanic centers in Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 1091-F, unpaged, 3 sheets, scale 1:1,000,000.
ADGGS website with links to map PDFs

Geologic reconnaissance in the Yukon-Kuskokwim Delta region, Alaska, 1957
Coonrad, W. L., 1957, Geologic reconnaissance in the Yukon-Kuskokwim Delta region, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 0223, unpaged, 1 sheet, scale 1:500,000.