The German linguist Wilhelm Schmidt first linked the West Bird's Head and North Halmahera languages in 1900. In 1957 H.K.J. Cowan linked them to the non-Austronesian languages of Timor as well. Stephen Wurm believed that although traces of West Papuan languages were to be found in the languages of Timor, as well as those of Aru and Great Andaman, this was due to a substratum and that these languages should be classified as Trans–New Guinea, Austronesian, and Andamanese, respectively. Indeed, most of the languages of East Nusa Tenggara and Maluku appear to have some non-Austronesian influence.