L. S. Freeland’s scientific contributions

... It is currently highly endangered, but is still spoken by a small number of elders in Northern California. The Karuk data provided here come from written texts: Bright (1957), de Angulo & Freeland (1931) and Harrington (1932). 2 The literature on evidentiality is vast, and we do not pretend to present an exhaustive review, but believe we have exemplified most of the topics relevant to a universal or typological characterization. We do not, however, address two questions. ...

Reference:

Characterizing evidentiality

... While structural similarities among recognized familial groups were widely regarded at the beginning of the twentieth century to be evidence of deeper genetic affiliations, Boas, in both the introduction to the Handbook of American Indian Languages (1911) and his introduction to the first issue of IJAL (Boas 1917), calls this assumption into question, suggesting instead that structural elements and grammatical traits might be to some extent diffused across phylogenetic lines in the same way that lexical material can pass between languages. This idea did not have widespread acceptance at the time and is explicitly argued against in Michelson (1921), although articles documenting cases of grammatical diffusion across phylogenetic lines do appear sporadically in IJAL in the decades following Boas's musings (e.g., De Angulo and Freeland 1935). In European linguistics, the recognition of the language area, a geographic region containing languages that share grammatical traits at least in part as the result of diffusion, can be traced back at least two centuries (Friedman 2000); however, it is not until the late 1960s and 1970s that the linguistic area becomes a serious focus of attention in the Americas (Haas 1967(Haas , 1969a(Haas , 1970Darnell and Sherzer 1971;Lindenfeld 1971;Scherzer 1972Scherzer , 1973Scherzer , 1976Silverstein 1974;Aoki 1975;Oswalt 1976). ...

Reference:

The Contribution of Research on the Languages of the Americas to the Field of Linguistics