1. Map showing locations of radiometric ages in rocks in southwestern Alaska [cartographic material] Yale Public content 1981. 2002-06-01T04:00:00Z. 2023-02-22T04:01:20Z. Geological Survey (U.S.). The Survey. English. text. Public. Alaska.
2. Map showing locations of radiometric ages of rocks in the Aleutian Islands and Alaska Peninsula [cartographic material] Yale Public content 1981. 2002-06-01T04:00:00Z. 2023-01-28T04:01:19Z. Geological Survey (U.S.). The Survey. English. text. Public. Alaska.
3. Potassium-argon determinations from the Port Moller and Stepovak Bay quadrangles, Alaska Peninsula [microform] Yale Public content 1987. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey : [Books and Open-file Reports Section, distribution]. English. Public. Alaska.