As she completed her survey of Native American legends, Hansen published three nonfiction books. The first, Some Considerations of and Additions to the Taylor-Wegener Hypothesis of Continental Displacement (1946), details the elaboration of the continental drift theory proposed by Frank Bursley Taylor. Her second book, He Walked the Americas (1963), is a frequently cited taxonomy of Native American legends that report of a light-skinned prophet. Her last book, The Ancient Atlantic (1969), surveys the culture and geography of the Atlantic Ocean and touches on the legend of Atlantis.