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

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

Richter, D. H., 1976, Geologic map of the Nabesna quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 0932, unpaged, 1 plate, scale 1:250,000.

Richter, D.H., and Smith, R.L., 1976, Geologic map of the Nabesna A-5 quadrangle, Alaska: US Geological Survey Geologic Quadrangle Map 1292, 1 sheet, available at http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=13027 .
link to DGGS website with citation information and PDF link

Mendenhall, W. C., 1905, Geology of the central Copper River region, Alaska: U.S. Geological Survey Professional Paper PP 0041, 133 p., 1 plate, scale 1:63,360.
full-text PDF : 33 MB
plate 4 PDF : 28.5 MB
plate 11 PDF : 16 MB
plate 19 PDF : 17.4 MB
plate 20 PDF : 2.4 MB