Wapiti formation and Trout Peak Trachyandesite, northwestern Wyoming, by Willis H. Nelson and William G. PierceWillis H. Nelson · First published 1968Open the Tome
Stratigraphy and structure of the Ekokpuk Creek area, north-central Brooks Range, AlaskaWillis H. Nelson · First published 1990Open the Tome
Geology and mineral resources of the North Absaroka Wilderness and vicinity, Park County, WyomingWillis H. Nelson · First published 1980Open the Tome
Geology of part of the Alder Creek mining district Custer County, IdahoWillis H. Nelson · First published 1968Open the Tome
Wapiti Formation and Trout Peak Trachyandesite, northwestern WyomingWillis H. Nelson · First published 1968Open the Tome
Geology of the Duck Creek Pass quadrangle, MontanaWillis H. Nelson · First published 1963Open the Tome
Geology of Segula, Davidof, and Khvostof Islands, AlaskaWillis H. Nelson · First published 1959Open the Tome
Geologic map of the Gracey quadrangle, Trigg and Christian Counties, KentuckyWillis H. NelsonOpen the Tome
